© Mario Izquierdo

 Resumen de noticias: Carnets de Géology

Carnets Geol.

· Review of some Aptian ammonites collected by Gaston Astre in Lleida Province, Catalonia, Spain. Josep A. Moreno-Bedmar& Keith P. Minor.- We study the three best preserved ammonites collected by Astre in 1924-1925 in Lleida Province, Catalonia, Spain, in order to assess their taxonomic assignment. We also include images of these ammonoids since they were not illustrated in Astre's original 1934 work. This taxonomic review allows us to identify these lower Aptian ammonites as Pseudohaploceras liptoviense, Deshayesites sp. and Dufrenoyia sp.- Handle-ID: http://hdl.handle.net/2042/$$$$$

· Sequence stratigraphic architecture of marine to fluvial deposits across a passive margin (Cenomanian, Atlantic margin, Morocco, Agadir transect). Badre Essafraoui, Serge Ferry, Danièle Groshény, Nourrisaid Içame, Hassan El Aouli, Moussa Masrour, Luc G. Bulot, Yves Géraud& Mohamed Aoutem.- Seven sections, covering the upper Albian to lowermost Turonian, have been correlated from full-marine to continental-dominated deposits across a passive margin, along a transect 425 km long, from the present-day Atlantic coast to the"Pre-African Trough" between the Anti-Atlas and the High-Atlas. The thickness of the Cenomanian succession changes from around 500 metres in the fully marine sections to 250 metres in mostly continental facies in the western High-Atlas, about 150 km updip, to a few tens of metres in the Bou Tazoult area. The strata thicken again eastwards into the Pre-African Trough where they can be traced without major facies changes to the Kem Kem embayment and to the Bechar area in Algeria. Over all this eastern area, continental facies are overlain by the fully-marine shallow-water deposits of the Cenomanian-Turonian boundary interval. A first major conclusion is that fluvial aggradation in high-frequency transgressive-regressive sequences is coeval with the seaward-shift of the shoreline, in accordance with the genetic sequence stratigraphic model of Galloway (1989). Both the flatness of the depositional profile and the corresponding very low energy of the marine environment during the transgressions account for the blanket of red continental clays on top of marine facies in updip depositional sequences, which is then preserved under the marine transgressive surface of the next sequence. A second major conclusion is that the high-frequency transgressive-regressive (T-R) sequences do not look like classical parasequences bounded by transgression surfaces. They usually exhibit a surface created by a sea-level fall within the regressive half-cycle. This is interpreted in the following way: regressions did not operate through a regular seaward-shift of the shoreline, but through stepped sea-level falls. The very low slope of the depositional ramp is thought to have enhanced the sequence stratigraphic record of such stepped regressions. Short-term, high-frequency sequences are organized into medium-frequency T-R sequences (seven in the Cenomanian) which show an overall aggrading and slowly retrograding pattern along the whole transect. Comparisons with other basins show that medium-frequency sequences do not fit the third-order depositional sequences described elsewhere, casting doubts about a eustatic mechanism for their deposition.- Handle-ID: http://hdl.handle.net/2042/£££££

· End of a modern geological myth: there are no rudists in Brazil! Paleobiogeographic implications. Bruno Granier& Dimas Dias-Brito.- Out of the few records of rudists from the Cretaceous strata of the South Atlantic coastal basins only two refer to Brazilian localities. However, petrographic analyses demonstrate that these shells should be assigned to Ostreids or to Pycnodontids rather than to Rudistids. More specifically, the domain considered herein, north of the Río Grande Rise - Walvis Ridge barrier, was part of the warm-water"tropical" realm, but it was not part of the Mesogean domain because both Rudistids and Orbitolinas are missing. In addition, the scarcity of corals leads us to ascribe the taphonomic assemblage to the Chloralgal facies. Neither generalized hypersalinity or extreme sea-water temperatures seem to account for these biotic peculiarities. Instead, our alternative hypothesis favors the driving role played by oceanic circulation in the dispersal of the benthic organisms.- Handle-ID: http://hdl.handle.net/2042/56880

· Facies, biostratigraphy, diagenesis, and depositional environments of Lower Cretaceous strata, Sierra San Jos section, Sonora (Mexico). Jayagopal Madhavaraju, Robert W. Scott, Yong Il Lee, Kunjukrishnan Sathy Bincy, Carlos M. González-León& Sooriamuthu Ramasamy.- We used petrofacies analysis, carbon, oxygen and strontium isotope data to interpret the isotopic variations in the carbonate rocks of the Mural Formation of Sonora (Sierra San José section), Mexico. The petrographic study reveals a range of lithofacies from wackestone to packstone. The analyzed limestones show significant negativeδ18O values (-18.6 to -10.9 VPDB) andδ13C values ranging from negative to positive (-2.6 to +2.5‰ VPDB). The absence of correlation betweenδ13C andδ18O values suggests a primary marine origin for theδ13C values of limestones from the Sierra San José section. The limestones have large variations in 87Sr/86Sr values (0.707479 to 0.708790). Higher 87Sr/86Sr ratios in various levels of the studied section suggest that most of the sediments were derived from the Proterozoic basement of the Caborca block during Early Cretaceous time. A decrease in 87Sr/86Sr ratios at certain levels indicates an influx of lesser amounts of radiogenic Sr that could have been caused by contribution of sediments from the Triassic and Jurassic volcanic rocks.- Handle-ID: http://hdl.handle.net/2042/56879

· Cambrian fossils from the Barrandian area (Czech Republic) stored in the Muse d'Histoire Naturelle de Lille. Oldřich Fatka, Petr Budil, Catherine Crônier, Jessie Cuvelier, Lukáš Laibl, Thierry Oudoire, Marika Polechová& Lucie Fatková.- A complete list of fossils originating from the Cambrian of the Barrandian area and housed in the Musée d'Histoire Naturelle de Lille is compiled. The collection includes two agnostids, ten trilobites, one brachiopod and one echinoderm species, all collected at ten outcrops in the Buchava Formation of the Skryje-Týřovice Basin and most probably also at two outcrops in the Jince Formation of the Příbram-Jince Basin. A large part of the material was collected by Prof. Charles Barrois and Dr. Louis Dollé (both University of Lille) during the excursion organised before the Ninth International Geological Congress in Vienna in 1903. Other, poorly documented specimens were purchased from the enterprise Krantz towards the end of the 19th century and in the first years of 20th century. The geographic position and stratigraphy of outcrops, from which the material originates, are briefly discussed.- Handle-ID: http://hdl.handle.net/2042/56878

· Lower Valanginian ammonite biostratigraphy in the Subbetic Domain (Betic Cordillera, southeastern Spain). Miguel Company& José M. Tavera.- A new zonation for the lower Valanginian in the Betic Cordillera is presented. It is based on the study of 16 sections located near Caravaca and Cehegín (Region of Murcia). From bottom to top, the following interval zones, defined by the first appearance of the index-species, are distinguished: *"Thurmanniceras" pertransiens Zone, which can be subdivided into two subzones, a lower"Th." pertransiens Subzone and an upper Vergoliceras salinarium Subzone. The latter is characterized by the disappearance of Olcostephanus drumensis and the appearance of Luppovella superba. * Neocomites neocomiensiformis Zone, also with two subzones, the Baronnites hirsutus Subzone below (characterized by the appearance of"Busnardoites" subcampylotoxus and Olcostephanus guebhardi) and the Valanginites dolioliformis Subzone above ("Busnardoites" campylotoxus is restricted to this subzone). * Karakaschiceras inostranzewi Zone, subdivided as well into two subzones, a lower Karakaschiceras inostranzewi Subzone and an upper Saynoceras contestanum Subzone. The assemblages characterizing each of these biozones can be recognized throughout the Mediterranean region.- Handle-ID: http://hdl.handle.net/2042/56745

· Some encrusted hardgrounds from the Ordovician of Estonia (Baltica). Olev Vinn& Ursula Toom.- The Ordovician hardground faunas of Estonia are not diverse. They include echinoderm holdfasts (i.e., eocrinoids and crinoids), edrioasteroids, bryozoans (both hemispherical trepostomes and stalked ptilodictyids) and cornulitids. The earliest hardground faunas appeared in the Dapingian (i.e., bryozoans and echinoderms). The Estonian hardground faunas are less diverse than the North American ones. North American hardgrounds seem to be more heavily encrusted than the Estonian ones. These differences may be due to the paleogeographic distances, different climates and different sedimentation environments of the paleocontinents.- Handle-ID: http://hdl.handle.net/2042/56744

· MayLib - a textfile-based bibliographic database for geosciences and a list of references on Devonian matters. Andreas May.- Scientists need to manage their own collections of bibliographic data as well as exchange these data easily with colleagues. One solution for this need is MayLib, a bibliographic database that runs on many different operating systems and does not require pre-installation of any software. MayLib is a very small, efficient and comprehensive JAVA program that handles references to publications in any Unicode-compatible language. It is user-friendly and not only contains the basic functions of a bibliographic database, but also has some advanced features. Using MayLib the author has been able to create a list of references, which contains 500 periodicals and 4206 literature references. Of these 4206 references 3191 deal with Devonian matters and 1594 references deal with corals.- Handle-ID: http://hdl.handle.net/2042/56481

· New faunistic data on the Pleistocene environmental evolution of the south-western edge of the Hyblean Plateau (SE Sicily). Francesco Sciuto, Antonietta Rosso, Rossana Sanfilippo& Rosanna Maniscalco.- Faunistic associations of the Lower Pleistocene sediments, out-cropping at Cartiera Molino along the true right bank of the Ippari River (Vittoria, SE Sicily), have been investigated. This study integrates data obtained from the analysis of ostracods, foraminifers, bryozoans and serpulids found within a six metre thick sedimentary section. This multiproxy approach allowed us to reconstruct the palaeoenvironmental evolution of this south-western sector of the Hyblean Plateau (Comiso-Vittoria area) from fluvially-influenced shallow marine settings, recorded in the lower portion of the succession, to progressively shallower, transitional and brackish environments, testified in mid levels, up to freshwater environments at the top of the section.- Handle-ID: http://hdl.handle.net/2042/56401

· A reassessment of the validity and affinities of Belemnites sulcatus Miller, 1826, Belemnopsis Edwards in Gray, 1849, and Belemnopsis Bayle, 1878. Simon F. Mitchell.- A reinvestigation of the validity of the belemnite genus Belemnopsis Bayle is undertaken, together with a survey of the early history of the usage of the names Belemnites sulcatus, Belemnopsis Bayle and Belemnopsis Edwards. Belemnites sulcatus Miller has been variously equated with either Belemnites apiciconus Blainville or with the group of belemnites including Belemnites Altdorfensis Blainville and B. Beaumontianus Orbigny. Riegraf (and not Phillips) subsequently designated a lectotype which may be valid and, in case it is not, is validated here. The species concept for Belemnites sulcatus, as based on this lectotype, places it in the genus Holcobeloides Gustomesov. Belemnopsis Edwards has date priority over Belemnopsis Bayle, but must be interpreted as an"incorrect original spelling" and, therefore, does not enter into homonymy according to the ICZN; Belemnopsis Bayle is thus a valid genus. Douvillé subsequently nominated Belemnites sulcatus, which was figured as Belemnopsis sulcata by Bayle, and therefore is a valid designation because this species is amongst the original species included in Belemnopsis by Bayle. One of Bayle's figures of Belemnopsis sulcata agrees with Belemnites apiciconus Blainville, but does not agree with Belemnites sulcatus as defined by its lectotype; as such this is a case of misidentified type species. Belemnites apiciconus Blainville, the species involved in the misidentification, is therefore designated type species of Belemnopsis Bayle here and validated by citing the ICZN. The actions taken here maintain nomenclature at the genus, family and suborder level in respect to the names Belemnopsis and Belemnosis and serve to stabilize the complicated nomenclature issues related to these taxa.- Handle-ID: http://hdl.handle.net/2042/56399

· Earliest Aptian Caprinidae (Bivalvia, Hippuritida) from Lebanon. Jean-Pierre Masse, Sibelle Maksoud, Mukerrem Fenerci-Masse, Bruno Granier& Dany Azar.- The presence in Lebanon of Offneria murgensis and Offneria nicolinae, two characteristic components of the Early Aptian Arabo-African rudist faunas, fills a distributional gap of the corresponding assemblage between the Arabic and African occurrences, on the one hand, and the Apulian occurrences, on the other hand. This fauna bears out the palaeogeographic placement of Lebanon on the southern Mediterranean Tethys margin established by palaeostructural reconstructions. The associated micropaleontological elements suggest an earliest Aptian age (early Bedoulian) for the Offneria murgensis - O. nicolinae assemblage found in the"Falaise de Blanche" stratigraphic interval, instead of a late Early Aptian age as proposed for most of the peri-Adriatic and Middle East occurrences recognized so far. These caprinid specimens are characterized by relatively modest sizes, moreover other rudists commonly part of the assemblage are lacking. The dominance of caprinids in the study area suggests a distal platform setting, i.e., close proximity to the platform edge.- Handle-ID: http://hdl.handle.net/2042/56397

· Simple and practical techniques to manage small databases, illustrated by a case study: bibliographic data from the"Fossil Cnidaria& Porifera" newsletter. Katarzyna Zalecka, Tomasz Wrzołek& Bruno Granier.- Small databases, i.e., with less than 15,000 entries, are sometimes handled using inappropriate, complex, and often expensive data management systems. We present and briefly discuss a few types of proprietary and open-source, relational and non-relational, server-based versus portable databases and specific tools to handle the latter. With a collection of nearly 7,000 bibliographic notes during its 40-year history"Fossil Cnidaria& Porifera (FC&P)", the newsletter of the"International Association for Study of Fossil Cnidaria and Porifera", was chosen as a case study. The analysis of the temporal trends in the FC&P bibliographic database shows a decrease over the years in the number of publications effectively reported in FC&P. Almost all relevant papers for the decade 1981-1990 are reported, but this good coverage ratio falls down to less than 50% after 2000; accordingly, the concern about the data representativeness is addressed in our interpretation. Besides the classical database management systems and spreadsheet software, which were originally used with the FC&P case study, we present two discrete, open-source, flat and portable options where data can be displayed using any widely available Internet browser, and that are suitable to handle most small databases (XML or JS files) as documented herein.- Handle-ID: http://hdl.handle.net/2042/56249

· Lower Aptian ammonites of the Sierra de Parras, Coahuila State, northern Mexico. José R. Ovando-Figueroa, Josep A. Moreno-Bedmar, Gabriel Chávez-Cabello& Keith P. Minor.- We report an interesting Aptian ammonite record from the La Peña Formation in the Sierra de Parras, Coahuila State. This assemblage is analyzed from a paleoecological perspective. It contains the first reported occurrence of a macroconch of Dufrenoyia from Mexico, and the largest known specimen of'Gargasiceras' adkinsi. Such an assemblage yielding large ammonites is unusual in deposits of this age in Mexico. To properly document this ammonite record, we review'Gargasiceras' adkinsi, formerly misidentified as Rhytidoplites robertsi, and allied taxa. From our analysis, we conclude that'Gargasiceras' adkinsi exhibits strong intraspecific variability. We also analyze in detail the differences that exist between'Gargasiceras' adkinsi and Rhytidoplites robertsi, and emend the concept of the genus Rhytidoplites. These revisions are important from a biostratigraphic point of view since'Gargasiceras' adkinsi is an index species for the lower Aptian ammonite zonation of Mexico.- Handle-ID: http://hdl.handle.net/2042/56250

· In memoriam of my colleague and friend Guy Tronchetti (1938-2014). Michel Moullade.- The chief editor of a prestigious scientific journal, who is about to publish a major article of which Guy is one of the lead authors, replied to the news of his passing:"I am very sorry to hear about that. I have known Guy Tronchetti from publications, for a long time. It is really sad." This quote and Googling his name show that, according to his publications, some of them very recent, Guy was still both at the cutting edges of research and a scientist at an international level. His great modesty did not allow people to necessarily acknowledge this, especially those who did not attempt to overcome such an obstacle. - Handle-ID: http://hdl.handle.net/2042/56047

· Significance of partial leaching in calcareous ooids: The case study of Hauterivian oolites in Switzerland. Bruno Granier, Vincent Barbin& Jean Charollais.- In the Canton of Vaud (Switzerland), two Hauterivian oolitic units were penetrated by a borehole. In both units, the ooids are partly leached. More specifically, the ooid cortices were partly leached and some ooid nuclei appear suspended in the middle of cortical moldic cavities created by leaching, rather than having fallen to the bottom of these cavities before the final cementation take place. We demonstrate that these ooids were originally calcitic, not aragonitic, not"two-phase" nor"bimineral". This leaching is not an early diagenetic feature related to subaerial exposure, but a late diagenetic feature, possibly related to the migration of acidic pore waters, brought about by Alpine tectonics and/or karstification.- Handle-ID: http://hdl.handle.net/2042/56045

· Borings and etchings in the Upper Bathonian-Lower Callovian oolite of the Paris Basin (France). Bruno Granier.- The oolite of the"Dalle Nacrée" Formation in the Paris Basin is made of marine calcareous ooids with, from base to top, radial (and therefore likely to have been calcite), concentric and micritic fabrics, each corresponding to a discrete stratigraphic unit. Several hardgrounds and oolitic pebble-cobble layers in the succession are encrusted and bored. Three main types of boring have been identified ranging in sizes from some tens ofµm (sponge borings) to centimeters (bivalve borings), with an intermediate category (worm borings). Some worm borings have rough walls, where early marine fibrous cement is less corroded than the cortices of cemented ooids. The key to understanding this differential dissolution could be related to organic matter, present within the ooid cortices but lacking in the fibrous cement. Polychaete worms that use chemical means (enzymes or acids) to bore are probably responsible for these peculiar borings. A secondary conclusion is that partly or fully leached ooid cortices do not necessarily indicate an original aragonitic mineralogy of the dissolved parts.- Handle-ID: http://hdl.handle.net/2042/56043

· Devonian Phillipsastreid tetracorals of the genus Rozkowskaella from the Holy Cross Mountains, Poland. Tomasz Wrzołek.- Solitary or weakly colonial Phillipsastreid tetracorals of the Upper Frasnian of Holy Cross Mountains, Poland, with triangular to oval shape of transverse-section and tendency towards reduction of the horseshoe dissepiments, are included here in the genus Rozkowskaella, with Rozkowskaella sandaliformis, R. cf. sandaliformis and Rozkowskaella sp.- Handle-ID: http://hdl.handle.net/2042/56041

· Two new species of Early Pleistocene marine ostracods from Southeast Sicily. Francesco Sciuto.- Two fossil species of Ostracoda belonging to the genera Urocythereis Ruggieri, 1950, and Semicytherura Wagner, 1957, discovered in the Lower Pleistocene shallow marine sandy-silty sediments outcropping at"Cartiera Molino" (F. 276, IV NO, Vittoria, Southeast Sicily) are described and figured.- Handle-ID: http://hdl.handle.net/2042/56039

· Revision of"Falaise de Blanche" (Lower Cretaceous) in Lebanon, with the definition of a Jezzinian Regional Stage. Sibelle Maksoud, Bruno Granier, Dany Azar, Raymond Gèze, Jean-Claude Paicheler& Josep A. Moreno-Bedmar.- The"Falaise de Blanche" is a prominent cliff, consisting mostly of Lower Cretaceous limestones that extends as linear outcrops over most of the Lebanese territory and provides geologists a remarkable reference for stratigraphic studies. However, until now, this unit was lacking a clear definition. We introduce herein the Jezzinian Regional Stage, the type-locality of which is at Jezzine. It equates as an unconformity-bounded unit and, per definition, it is framed by two discontinuities. Because we identified an additional, median sequence-boundary, poorly-expressed in the type-section but better at Aazour, only 4.5 km westward of Jezzine, the new regional stage implicitly spans two sequences. The lithostratigraphic framework being properly redefined, we were able to investigate time-constrained micropaleontological assemblages, consisting mostly of benthic foraminifers and calcareous algae. Typically Southern Tethysian, these assemblages contribute to high-resolution, holostratigraphic correlations with the Persian Gulf area, on the eastern part of the Arabian Plate. The Jezzinian interval correlates with the upper part of the Kharaibian Regional Stage (also known as"Thamama II" reservoir unit in the oil industry). In turn, the Jezzinian is indirectly correlated with the Northern Tethysian Urgonian stratigraphic units where it corresponds to a rather short interval encompassing the standard Barremian - Bedoulian stage boundary. Locally the upper discontinuity is associated to a significant intra-Bedoulian hiatus. The macrofossil assemblages found in the Jezzinian (echinids) and above it (ammonites) support, or at least do not contradict, our micropaleontological dating.- Handle-ID: http://hdl.handle.net/2042/54359

· Les genres Subgrossouvria Spath et Orionoides Spath (Ammonitina, Perisphinctidae) de l'Horizon Leckenbyi (Callovien suprieur, Zone Athleta) de Montreuil-Bellay (Maine-et-Loire, France) [The genera Subgrossouvria Spath and Orionoides Spath (Ammonitina, Perisphinctidae) from the Leckenbyi Horizon (Upper Callovian, Athleta Zone) of Montreuil-Bellay (Maine-et-Loire, France)]. Alain Bonnot, Pierre-Yves Boursicot& Patrice Ferchaud.-À Montreuil-Bellay (Maine-et-Loire, France), le premier banc d'âge Callovien supérieur (Horizonà Leckenbyi) a fourni une très abondante faune ammonitique (N=3275). Dans la famille des Perisphinctidae,à côté de Choffatia isabellae Bonnot et al. et du genre Pseudopeltoceras Spath, on trouve deux autres genres : le genre Subgrossouvria Spath est représenté par S. famula (Bean in Spath) et S. crassa Gérard& Contaut, le genre Orionoides Spath par O. indicus Spath. L'abondance et la qualité du matériel ont permis la description de l'ontogenèse et la figuration de macroconques et de microconques de ces trois espèces, parmi lesquels des adultes completsà péristome conservé. La diagnose du genre Orionoides, souvent mal interprété, aété amendée. L'extension stratigraphique de ces espèces estégalement précisée et leur devenir potentiel est envisagé. Nous avançons l'hypothèse que ces espèces ont colonisé la plate-forme nord-ouest européenne via la marge sud de la Téthys, comme Peltoceras marysae Bonnot et al. et Choffatia isabellae Bonnot et al. [In the Montreuil-Bellay area (Maine-et-Loire, France), the lowermost bed of the Upper Callovian (Leckenbyi Horizon) contains a very abundant ammonite fauna (N=3275). The Family Perisphinctidae is represented by Choffatia isabellae Bonnot et al., the genus Pseudopeltoceras Spath, the genus Subgrossouvria Spath, which includes S. famula (Bean in Spath) and S. crassa Gérard& Contaut, and the genus Orionoides Spath, which comprises O. indicus Spath. Thanks to the abundance and quality of the material, it was possible to describe and figure macroconchs and microconchs of these three species, including adult specimens with preserved peristome. The stratigraphical ranges of these taxa are also specified and their potential descendants can be considered. These species are unknown in the uppermost Middle Callovian, and we assume that they colonized the northwestern part of the European platform via the southern margin of the Tethys, as did Peltoceras marysae Bonnot et al. and Choffatia isabellae Bonnot et al.]- Handle-ID: http://hdl.handle.net/2042/54363

· Nannofossils and foraminifera from the Salamanca Formation (Paleocene) in Punta Peligro Norte (Chubut, Argentina). Margarita Simeoni.- An assemblage of nannofossils from the Salamanca Formation is reported for the first time from the Punta Peligro Norte locality in the San Jorge Gulf Basin, Argentina. Several recognized nannofossils have a stratigraphic distribution within the lower Danian. The assemblage of nannofossils and associated foraminifera is here discussed taking into account biostratigraphic and paleoecological aspects.- Handle-ID: http://hdl.handle.net/2042/54361

· Ostracodes from the Upper Cretaceous deposits of the Potiguar Basin, northeastern Brazil: taxonomy, paleoecology and paleobiogeography. Part 2: Santonian-Campanian. Enelise Katia Piovesan, Maria Cristina Cabral, Jean-Paul Colin, Gerson Fauth& Cristianini Trescastro Bergue.- Sixty-four Ostracoda taxa were recorded from the Santonian–Campanian of Potiguar Basin, northeastern Brazil. The following new species were described: Triebelina anterotuberculata, Triebelina obliquocostata, Cophinia ovalis, Fossocytheridea potiguarensis, Ovocytheridea anterocompressa, Ovocytheridea triangularis, Perissocytheridea jandairensis, Semicytherura musacchioi and Protocosta babinoti. The faunal association indicates predominantly shallow marine environments, intercalated with typically mixohaline levels. These species are mostly endemic, although the presence of six species common to West and North Africa shows that migration was still possible by the end of the Cretaceous.- Handle-ID: http://hdl.handle.net/2042/54151

· Temporal and latitudinal trends in the biodiversity of European Atlantic Cenozoic gastropod (Mollusca) faunas. A base for the history of biogeographic provinces. Pierre Lozouet.- A general overview of the biodiversity of the marine fauna during the Tertiary period is developed in the context of the biogeographical evolution of the European realm. This study combines a reappraisal of the literature with a unique first-hand source of data on the richest marine group (the gastropods) from over a 25 million year period (Early Oligocene to Late Miocene). In total the French deposits have yielded more than 10,000 species from the Eocene to the Upper Miocene. Evidence of significant bias in the fossil record is pointed out for the Palaeocene (Danian) and Upper Eocene (Priabonian). For the period considered (Palaeocene to Late Miocene, ca 50 million years) the second highest diversity is reported in the Late Oligocene. This study reveals also the importance of pre-Miocene extinctions of genera. The Oligocene was when the latitudinal differentiation of the faunas was greatest. The local generic gastropod richness ranges from 59 (Rupelian of Belgium) to 494 (Chattian of Aquitaine). A clear trend towards homogenization appears in the Late Oligocene which leads to the development of a vast biogeographical region named Euro-West Africa. This faunal evolutionary pattern has never been demonstrated before and is a novel feature of the biogeography of the Eastern-Atlantic region.- Handle-ID: http://hdl.handle.net/2042/54150

· Origin of the Tethyan Hemihoplitidae tested with cladistics (Ancyloceratina, Ammonoidea, Early Cretaceous): an immigration event?. Didier Bert& Stéphane Bersac.- The Late Barremian Hemihoplitidae (Ancyloceratina, Ammonoidea) are widely known in the northern Tethyan Margin and the Essaouira-Agadir Basin (Morocco). Their rapid evolution and diversification make them one of the key groups for that period, but their origin remains poorly known and several competing hypotheses have been published. These hypotheses are tested here with cladistic analysis in order to reject those receiving the least support and discuss those well supported. The analysis discards the Crioceratitidae, Emericiceratidae (Emericiceras and Honnoratia) and Toxancyloceras as stem-groups of the Hemihoplitidae (Gassendiceras). The Toxancyloceras appear instead to be a sister-taxon of the Moutoniceras, so we propose the latter to be classified with the Ancyloceratidae rather than with the Heteroceratidae. The best supported hypothesis assumes that the Hemihoplitidae first appeared suddenly in the Essaouira-Agadir Basin at the end of the Early Barremian from small populations of Boreal Paracrioceras. These latter could have migrated southward episodically before invading the northern Tethyan margin at the beginning of the Late Barremian. As a consequence, the Paracrioceratidae fam. nov. is proposed to include the Boreal groups Fissicostaticeras / Paracrioceras / Parancyloceras, and Gassendiceras essaouirae sp. nov. is proposed as a new name for the Moroccan endemic"Barrancyloceras" maghrebiense sensu Company et al., 2008, non Immel, 1978.- Handle-ID: http://hdl.handle.net/2042/54149

· Ostracodes from the Upper Cretaceous deposits of the Potiguar Basin, northeastern Brazil: taxonomy, paleoecology and paleobiogeography. Part 1: Turonian. Enelise Katia Piovesan, Maria Cristina Cabral, Jean-Paul Colin, Gerson Fauth& Cristianini Trescastro Bergue.- This paper describes thirteen new species and two new genera of marine and brackish water ostracodes from the Turonian deposits of Potiguar Basin, NE Brazil, among a total of 53 taxa. The new species include Cophinia grekoffi, Fossocytheridea tiberti, Haughtonileberis dinglei, Hemicytherura viviersae, Jandairella obesa (new genus and species), Loxocorniculum? narendrai, Ovocytheridea posteroprojecta, O. reymenti, Perissocytheridea caudata, P. mossoroensis, Potiguarella grosdidieri (new genus and species), P. coimbrai and Procytherura ballentae. The diversity and dominance indexes vary according to the paleoenvironment. Three assemblages were identified: a predominantly mixohaline fauna in the basal part of the section, followed by a diversified shallow marine fauna and, in the upper part, a marine and brackish water ostracode fauna. Most of the recorded species are endemic. Eight species are common to Northwest and North Africa, indicating a faunal link during the Turonian. The study of the Turonian faunas of the Potiguar Basin represents a significant improvement to understand the dynamic evolution of the Brazilian basins and the paleobiogeographical relationship with other regions.- Handle-ID: http://hdl.handle.net/2042/54003

· First record of lowermost Cretaceous shallow-water limestones in the basement of the Transylvanian Depression (Romania). Ioan I. Bucur, Adriana Păcurariu, Emanoil Săsăran, Sorin Filipescu& Rodica Filipescu.- Triassic, Upper Jurassic and upper Lower Cretaceous sedimentary formations were previously studied from the Transylvanian Depression basement, but the presence of lowermost Cretaceous (Berriasian-Valanginian) has not been confirmed paleontologically. The carbonate sequence cored from a borehole drilled in the central part of the Transylvanian Depression yields microfossil assemblages dominated by benthic foraminifera. These new data unequivocally document the presence of characteristic Berriasian-Valanginian taxa in these deposits.- Handle-ID: http://hdl.handle.net/2042/54001

· A new type of entombment of Peronopsis (Agnostida) in a hyolithid conch. Oldřich Fatka& Vladislav Kozák.- An enrolled exoskeleton of the holaspid specimen of a tiny agnostid Peronopsis integra (Beyrich, 1845) entombed inside a conch of the hyolithid ?Buchavalites sp. is described from the middle Cambrian (Drumian) Jince Formation of the Příbram-Jince Basin (Czech Republic). The agnostid is associated with an ichnofossil of the feeding trace classified as Arachnostega-type behaviour. The enrolled attitude of the agnostid exoskeleton suggests that the specimen is a carcass rather than moult. Either the storm disturbance and/or well-protected source of food hypotheses could explain the entombed agnostid. This additional example supports a benthic mode of life in the agnostid P. integra. The studied association of feeding tunnels of an unknown Arachnostega-strategist and Peronopsis preserved inside a hyolithid conch is a case of"frozen" behaviour.- Handle-ID: http://hdl.handle.net/2042/54000

· The Cretaceous-Paleogene boundary and its 405-kyr eccentricity cycle phase: a new constraint on radiometric dating and astrochronology. Michel Hennebert.- Radiometric dating and astrochronologic dating still suffer discrepancies without knowing which one gives the most reliable results. A new tool is proposed to constrain both the approaches. The phase of the 405-kyr signal with respect to the Cretaceous - Paleogene boundary event has been determined in the Aïn Settara section (Kalaat Senan, central Tunisia). We use this phase value (Option 2), as well as an average of phase values obtained from the literature (Option 1), to examine the relationship linking both the radiometric (absolute) age assigned to the K-Pg boundary and the Cenozoic average-value of the ~405-kyr eccentricity period. A new useful constraint emerges: to any absolute age assumed for the K-Pg boundary corresponds a value of the mean Cenozoic 405-kyr period, and vice versa. Supposing a K-Pg boundary radiometric age in the vicinity of 66.0 Ma, then the number of entire cycles (comprised between two minima of the 405-kyr eccentricity signal) within the Cenozoic Period could only be equal to 163. When adding to this figure the parts of the cycles preceding and following these 163 entire cycles the total duration of the Cenozoic Era becomes equal to 163.168 cycles (Option 1) or 163.081 cycles (Option 2). We propose to grant a special interest to the determination of the 405-kyr cycle phase at stratigraphically well documented levels, particularly those that correspond to world-wide, sudden and catastrophic events, that are well located in time by reliable radiometric dates.- Handle-ID: http://hdl.handle.net/2042/53981

· Novocrania turbinata synonyme de N. anomala. Christian C. Emig.- Anomia turbinata, ou Anomie conique, (= Novocrania turbinata) aété décrite par Poli (1795) dans le Bathyal des côtes du Royaume des Deux-Siciles, avec comme synonyme Patella anomala Müller, 1776 (= N. anomala). Longtemps considérée comme la forme méditerranéenne de N. anomala, son histoire est brièvement décrite. Récemment, N. turbinata aété considérée par plusieurs auteurs, comme une espèce valide, mais sur quelques caractères ne correspondant pasà ceux de la description originelle ; ils apparaissent comme des variations des caractères de N. anomala. La présence conjointe des deux "espèces" dans plusieurs localités surtout sur le plateau continental tendà accréditer leur synonymie. Celle-ci aété récemment corroborée par des analyses moléculaires et est discutée en prenant aussi en compte les caractéristiques des bassins méditerranéens et leur histoire depuis le Miocène. Novocrania turbinata synonym of N. anomala.- Anomia turbinata, or conical Anomia (= Novocrania turbinata), was described by Poli (1795) in the bathyal environment off the coast of the Kingdom of the Two Sicilies, Patella anomala Müller, 1776 (= N. anomala) being considered a synonym. The history of this species, commonly considered as the Mediterranean form of N. anomala, will be described. Recently, several authors have described N. turbinata as a valid species on the basis of shell variations, as compared to N. anomala. After analysis of the taxonomic validity of these characters, both species are considered as synonymous. That is supported by their occurrence in various localities, mainly in the continental shelf. Their synonymy has been corroborated by molecular analyses and is discussed with reference to the characteristics of the Mediterranean basins and their history since the Miocene.- Handle-ID: http://hdl.handle.net/2042/53979

· Heydrichia (?) poignantii, sp. nov. (Sporolithaceae, Sporolithales, Rhodophyta), a 100 million year old fossil coralline red alga from north-eastern Brazil, and a new Hauterivian record of Sporolithon from Switzerland. William J. Woelkerling, Bruno Granier& Dimas Dias-Brito.- Fossil specimens of Heydrichia (?) poignantii, sp. nov. (Sporolithaceae, Sporolithales, Rhodophyta), representing the first confirmation of the genus in the fossil record, were discovered in thin sections of Albian limestones from the Riachuelo Formation, Sergipe Basin, and in thin sections of Albian - Cenomanian limestones from the Ponta do Mel Formation, Potiguar Basin in north-eastern Brazil. A detailed morphological-anatomical account of the species is provided, and its placement in Heydrichia is discussed in relation to current classification proposals. Comparisons with the four other known species of the genus, all non-fossil, show that H. poignantii is the only known species of Heydrichia in which thalli are encrusting to sparsely warty to horizontally layered with overlapping lamellate branches that commonly appear variously curved or arched, and in which thalli have sporangial complexes that become buried in the thallus. The evolutionary history of Heydrichia remains uncertain, but available data suggest that the genus may have diverged from the sporolithacean genus Sporolithon, known as early as Hauterivian times (c. 129.4-132.9± 1 Ma) from Spain (and newly reported here from Switzerland), or it may have arisen from a graticulacean alga such as Graticula, dating from mid-Silurian times (c. 427-435 Ma). Current data also suggest that Heydrichia is more likely to have arrived in Brazil from Central Atlantic waters than from higher latitude South Atlantic waters. This implies that currently living species in southern Africa probably arose later from ancestors further equatorward in the South Atlantic, although confirming studies are needed. All non-fossil species of Heydrichia are known only from the southern hemisphere.- Handle-ID: http://hdl.handle.net/2042/53736

· A negative carbon isotope excursion within the Dufrenoyia furcata Zone: proposal for a new episode for chemo-stratigraphic correlation in the Aptian. Fernando Nuñez-Useche, Josep Anton Moreno-Bedmar, Miguel Company& Ricardo Barragán.- In this work we discuss a proposed updated division of the C7 isotope segment of Menegatti et al. (1998). The new standard division of the segment C7 is based on a revision of published Barremian-Aptian carbon isotope curves from stratigraphic sections of the Prebetic Domain in Spain. It includes four distinct isotopic subunits labeled C7a to C7d, with a characteristic negative carbon isotope excursion at the base of the segment and which correlates with the Dufrenoyia furcata ammonite Zone. The negative excursion is recognized on a regional extent, and the term Intra-Furcata Negative Excursion (IFNE) is proposed to identify it. We provide possible sites correlatable with the IFNE in both the Old and New worlds, which suggest its potential use as an even global chemostratigraphic marker for the Aptian record.- Handle-ID: http://hdl.handle.net/2042/53734

· L'tage Albien dans sa rgion-type, l'Aube (France) : une synthse dans un contexte sdimentaire global. Francis Amédro& Bertrand Matrion.- Le département de l'Aube est la région-type de l'étage Albien créé par d'Orbigny (1842). Deux formations sont reconnues dans les faciès argileux ou"Gault" auct. du stratotype : les Argiles tégulines de Courcelles (82 m) surmontées des Marnes de Brienne (43 m). La limite entre les deux formations est définie au sommet d'un niveau induré (hardground L'Étape) aisément identifiableà la fois sur le terrain et en sondages. La région-type de l'étage Albien est particulièrement intéressante en raison de l'épaisseur exceptionnelle des faciès argileux (plus de 120 m), une situation unique dans le bassin anglo-parisien. Aujourd'hui, 82 % de la succession lithologique sont connus précisément grâceà 16 affleurements. Dans deux intervallesépais respectivement de 33 m et 28,50 m, une suite lithologique composite continue est construiteà l'aide de coupes qui se suivent et se relaient, corrélées l'uneà l'autre sur le terrainà l'aide de niveaux repères. Six faciès successifs sont décrits : dans les Argiles tégulines de Courcelles et du bas vers le haut : 1 - lit de nodules gréso-phosphatés ; 2 - argiles silteuses ; 3 - argiles et bancs calcaires ; dans les Marnes de Brienne : 4 - marnes argileuses ; 5 - gaize ; 6 - marnes argileuses.À uneéchelle plus fine, une rythmicité est démontrée dans la sédimentation. Elle se traduit dans les Argiles tégulines de Courcelles par des cycles pluri-décimétriques débutant par des niveaux silteux et limités au sommet par des surfaces perforées. Dans les Marnes de Brienne, les cycles, métriques (sauf dans la gaize où ils sont décimétriques), montrent des alternances de marne argileuse gris foncé et de marne gris pâle annonçant les craies rythmées du Cénomanien. Ces couplets correspondent probablementà des cycles de précession deséquinoxes (20 ka). Treizeévénementsà caractère lithologique (lits de nodules phosphatés, fonds durcis, niveaux riches en sable quartzeux et glauconie) etécologiques (horizons caractérisés par l'abondance momentanée d'un certain nombre de fossiles) sont identifiés dans la suite stratigraphique. Ces niveaux repères sont très utiles pour des corrélations précisesà travers le bassin. Une comparaison est proposée entre les faciès sableux de l'Yonne et les faciès argileux de l'Aube. La continuité de plusieurs lits de nodules phosphatés est démontrée depuis l'Yonne au sud-ouest jusqu'à l'Aube et le Perthois au nord-est, sur une distance supérieureà 130 km. Ces niveaux repères sont interprétés comme des surfaces d'inondation de cycles eustatiques de 3e ordre. Enfin, uneétude détaillée de la lithologie, complétée par une analyse des faunes d'ammonites et d'inocérames, est utilisée pour une interprétation séquentielle. Le résultat est l'identification de huit séquences eustatiques de 3e ordre dans la moitié supérieure des Argiles de Courcelles et les Marnes de Brienne, dont deux nouvelles séquences indexées AL 5a et AL 6a. The Albian Stage in its type area, the Aube (France): a synthesis in a global sedimentary context.- The Aube department is the type locality of the Albian stage created by d'Orbigny (1842). Two formations are recognised in the clay facies (the"Gault" auct.) of the stratotype, the Argiles tégulines de Courcelles (82 m), which is overlain by the Marnes de Brienne (43 m). The boundary between the two formations is defined at the top of an indurated bed (hardground L'Étape) that is readily identifiable, both in the field, and from boreholes. The type area of the Albian stage is of great interest because of the size of the clay facies (more than 120 m) unique in the Anglo-Paris basin. Today, 82 % of the lithological succession is documented accurately from 16 outcrops. In two intervals of respectively 33 m and 28.50 m thick, composite sections are made of overlapping sections which are correlated in the field with the help of lithological marker beds. Six successive facies are described: in the Argiles tégulines de Courcelles and from bottom to top: 1 - phosphatic nodules bed; 2 - silty clays; 3 - clays and limestone beds; in the Marnes de Brienne: 4 - clay marls; 5 - gaize; 6 - clay marls. On a smaller scale, a decimetre to metre-scale rhythmicity can be identified in the sedimentation. This is reflected in the Argiles tégulines de Courcelles by pluri-decimetric cycles that start with a silty level and are bounded at the top by a bored surface. In the Marnes de Brienne, the metric cycles (except for the gaize where they are decimetric) exhibit alternating dark grey clay marl and a pale grey marl that herald the rhythmic chalks of the Cenomanian. Individual couplets probably represent the precession cycles (20 kyr). On the other hand, 13 lithoevents as phosphatic nodules beds, hardgrounds, glauconitic and sandy beds and ecoevents characterised by the brief abundance of some fossils. These marker beds are very useful for fine correlations across the basin. A comparison is proposed between sandy units of Yonne and clay facies of Aube. The continuity of several phosphatic nodules beds is shown from Yonne in the South West to Aube and Perthois in the North East, that is a distance exceeding 130 km. These marker beds are interpreted as Flooding Surfaces of 3rd-order cycles. Finally, a detailed study of the lithology, complemented with the analysis of the ammonite and inoceramid faunas, is used for a depositional sequence interpretation. As a result, eight sequences are identified in the upper half of the Argiles tégulines de Courcelles and in the Marnes de Brienne in the type area of the Albian stage, including two new sequences indexed AL 5a and AL 6a.- Handle-ID: http://hdl.handle.net/2042/53732

· Paleocene larger foraminifera from the Yucatn Peninsula (SE Mexico). Vicent Vicedo, José Antonio Berlanga& Josep Serra-Kiel.- The larger foraminifera found in the material from the Chichen Itzá Formation of Campeche (SE Mexico) were studied in detail. The architectural analyses allow the description of four new species and a new genus, namely, two agglutinated conical foraminifera, Coskinolina yucatanensis n.sp. and Pseudofallotella drobneae n.gen. n.sp., one new alveolinid, Borelis hottingeri n.sp., and one new rotaliid, Dictyoconoides boneti n.sp. The larger foraminifera of the Chichen Itzá Formation are distributed across two different associations: one includes Pseudofallotella drobneae, Neotaberina sp., Rhabdorites sp., Borelis hottingeri, Dictyoconoides boneti, Kathina sp., Miscellaneidae, Ranikothalia soldadensis and Hexagonocyclina cristensis, while the other assemblage is composed of Coskinolina yucatensis, Fallotella causae, Rhabdorites sp., Borelis floridanus and Cincoriola cf. ovoidea. Some of these genera, including Neotaberina and Dictyoconoides, are cited in the Caribbean paleobioprovince for the first time in this paper. The first association is dated as Thanetian (SBZ 3? to SBZ 4) by the presence of Ranikothalia soldadensis. Though the age of the second association remains uncertain, a similar age has been inferred.- Handle-ID: http://hdl.handle.net/2042/53527

· Acanthocythereis colini nomen novum for A. reticulata Sciuto, 2014. Francesco Sciuto.- In Sciuto (2014), a new species, Acanthocythereis reticulata, was described from the Upper Pliocene sediments of NE Sicily and belonging to the Family Trachyleberididae Sylvester-Bradley, 1948- Handle-ID: http://hdl.handle.net/2042/53523

· A Cretaceous chronostratigraphic database: construction and applications. Robert W. Scott.- Timing and rates of tectonic events, evolutionary processes, and oceanographic and paleoclimatic changes must be based on high-precision numerical age calibration of stages defined in Global Stratotype and Section Points (GSSPs). The Cretaceous Chronostratigraphic Database (CRETCSDB3) is an objective, testable database that calibrates select Cretaceous events and enables high-resolution chronostratigraphic correlations. CRETCSDB3 is a compilation of more than 3500 taxa and marker beds in nearly 300 published sections calibrated to a mega-annum (Ma) scale. The database spans the Jurassic/Cretaceous and the Cretaceous/Paleogene boundaries. Construction of CRETCSDB3 began by plotting bioevents in the Kalaat Senan, Tunisia, Cenomanian-Turonian section to the 1989 time scale. The sedimentology, sequence stratigraphy, and biostratigraphy of this section were precisely documented and stage boundaries defined biostratigraphically. Additional sections with radiometrically dated beds were graphed to constrain the accuracy of the numerical scale. Ranges of first and last occurrences are calibrated to mega-annums of Cretaceous stages defined by GSSPs or reference sections. This database serves as a look-up table for interpolation and age calibration of other stratigraphic sections. The age ranges of some taxa and marker beds are preliminary and may be extended as new sections are added to the database. CRETCSDB3 tested the numeric age calibration of the Albian/Cenomanian boundary. This boundary in North Texas accurately correlates with the GSSP in France by ammonites, planktic foraminifers and dinoflagellates. This stage boundary in North Texas correlates with the 97.88±0.69 Ma Clay Spur Bentonite in Wyoming by sequence stratigraphy and cosmopolitan dinoflagellates. The inconsistency between this age and the current 100.5 Ma date of the 2012 Geologic Time Scale remains to be evaluated independently.- Handle-ID: http://hdl.handle.net/2042/53522

· Ostracods of the Upper Pliocene - Pleistocene Punta Mazza succession (NE Sicily) with special focus on the Family Trachyleberididae Sylvester-Bradley, 1948, and description of a new species. Francesco Sciuto.- The ostracod associations of the Upper Pliocene-Pleistocene sedimentary succession out-cropping at Punta Mazza (Milazzo, Sicily NE) have been investigated. The ostracod fauna is often well-preserved and well-diversified: there 42 species belonging to 24 genera have been found. The association consists almost exclusively of bathyal taxa such as Bythocypris obtusata (Sars), B. bosquetiana (Brady), Henryhowella ex H. profunda Bonaduce et al. group, Quasibuntonia radiatopora (Seguenza), Retibythere (Bathybythere) scaberrima Brady, Pseudocythere caudata Sars and Bythocythere mylaensis Sciuto. Also, the Krithe group is well-represented with Krithe compressa (Seguenza) and K. pernoides (Bornemann). Further taxa such as Cytheropteron testudo Sars are rare. Almost all species, especially those belonging to Trachyleberididae Sylvester-Bradley are described, illustrated and commented on, including a new species, Acanthocythereis reticulata n.sp., found in the lower part of the section in Upper Pliocene sediment, is proposed as new. Finally, a specimen belonging to the genus Quasibuntonia Ruggieri is currently given in open nomenclature.- 1401.- Handle-ID: http://hdl.handle.net/2042/****

· Silurian cornulitids of Estonia (Baltica). Olev Vinn& Mark A. Wilson.- Seven species of cornulitids are systematically described from the Silurian of Saaremaa and Hiiumaa islands, Estonia. There are three species of cornulitids in the Rhuddanian, three in the Sheinwoodian, single species in the Gorstian and Ludfordian, and three species in the Pridoli. Cornulitids have a facies range from pelletal limestones of shoal environments to deeper ramp marls. Endobiotic cornulitid symbionts occur in stromatoporoids found in shoal and open shelf zones. Gregarious aggregates are restricted to the limestones of the open shelf zone possibly because of higher nutrient levels in open shelf zone waters as compared to those of the deeper ramp. Unattached free forms are especially common in offshore deeper ramp marls presumably due to their adaption to life on a soft bottom. Solitary attached forms occur in all facies zones where cornulitids are present. Because the life modes of cornulitids are closely associated with particular facies zones, they are useful tools for paleoecological reconstructions.- CG2013_A09.- Handle-ID: http://hdl.handle.net/2042/53034

· Anisian Dasycladales from Upper Silesia and adjacent regions. Zbigniew Kotański.- Anisian Dasycladales (calcareous algae) from the Diplopora Dolomite of the Upper Silesia and adjacent regions of S Poland are revised. All previously reported taxa are critically reviewed and illustrated. New paleontological samples were collected from 74 outcrops and from 45 boreholes. The abundant material includes both specimens visible on fractured rock surfaces and thin-sectioned ones; 24 species of Dasycladales are identified, including three new species: Oligoporella chrzanowensis n.sp., Physoporella polonoandalusica n.sp., and Salpingoporella krupkaensis n.sp. Best-preserved specimens are illustrated in 39 plates. The identified species were compared with Alpine and Carpathian forms of stratigraphic importance. Six Dasycladalean local horizons are defined. The Pelsonian-Illyrian boundary occurs in the middle part of the Diplopora Dolomite. Its uppermost part, despite the presence of Diplopora annulata, belongs to the Illyrian, not to the Fassanian, as also corroborated by conodont correlations. The peculiar state of preservation (internal moulds and double tubes) is discussed; it is due to early syngenetic dolomitisation. The palaeoenvironment of the algae is determined as sublittoral. Dasycladales flourished upon a peri-Tethyan carbonate platform, widely connected with the Alpine-Carpathian seas. Five palaeoecological assemblages are recognized, differing in their bathymetric and turbulence conditions, and living in marine shoals and shallow basins separating them. The Upper Silesian platform was separated from the hypersaline Germanic Basin of the Middle Muschelkalk by banks and oolite and bioclastic barriers, blocking dispersal of marine biota. A wide connection existed with the Alpine-Carpathian seas, allowing immigration of High-Tatric, Križna and even South Alpine flora to the Upper Silesian Carbonate Platform.- CG2013_B02.- Handle-ID: http://hdl.handle.net/2042/53036

· Dissocladella hauteriviana Masse in Masse et al., 1999 (non Masse, 1976), another lower Urgonian Dasycladalean alga revisited. Bruno Granier.- First ascribed to the Triploporellacean genus Dissocladella (Pia in Rao& Pia, 1936), the species D. hauteriviana Masse in Masse et al., 1999, was supposedly characterized by a thallus bearing whorls of laterals each consisting of a stumpy primary with a tuft of four slim secondaries at its top. A restudy of the laterals proves that they split, not only once, but several times, and stepwisely decrease in diameter. The species is re-ascribed to the Family Thyrsoporellaceae in a new combination to the genus Deloffrella Granier& Michaud, 1987. Its known stratigraphic range is rather short (Late Valanginian-earliest Barremian). In addition, it disappears earlier than its companion Polyphysacean alga, i.e., Clypeina paucicalcarea (Conrad, 1970), and its geographical distribution is broader, which makes it a good index fossil for lower Urgonian carbonate platform series.- CG2013_L07.- Handle-ID: http://hdl.handle.net/2042/53035

· Obituary notice: Jean-Paul Colin. Pierre Carbonel, Maria Cristina Cabral& Dan L. Danielopol.- Jean-Paul Colin (1948 - 2013) passed away at the end of this summer and his departure is a cruel loss for our community, not only as a scientist of international repute, but also as an outstanding organizer and, for a number of us, as a good friend. Following his PhD degree in micropaleontology from the University of Paris VI in 1973, he spent his entire career in the exploration branch of the oil industry, first with EXXON in Houston and Bègles from 1974 to 1989, and then with ESSO REP in Bègles from 1989 to 2000. Initially, he worked on biostratigraphical micropaleontology, and later focused on ostracods, sequence stratigraphy and stratigraphic syntheses. From 2000 and until recently, he provided consultancy to several oil companies. Jean-Paul Colin also gave training courses to PETROBRAS and PETROCI, as well as workshops in Brazil (UNISINOS, São Leopoldo; University of Brasília; PETROBRAS, Rio de Janeiro) and Portugal (University of Lisbon). He taught applied micropaleontology in ENSEGID Bordeaux 3 and was a Research Associate at the University of Lisbon. His scientific work has never slowed down. Throughout his career and into retirement, he published or contributed to more than 300 publications and presentations at international conferences. Many times he was invited as a member for thesis juries in France and abroad. He was an internationally recognized authority on ostracods, especially those of the Cretaceous, but also had an excellent knowledge of the whole group throughout the post-Paleozoic time interval. Jean-Paul Colin was a great field and laboratory naturalist and as a scientific partner was always open to often lively discussion. His enthusiasm for the ostracods was huge and it was a pleasure to discuss with him. His special qualities were: that he was familiar with all the relevant literature; he had an encyclopedic memory; he always knew where to find the necessary literature and was able to comment on the specimens under investigation. He quickly identified the interesting and unusual subjects to be published. Being a very friendly person, he helped ostracodologists worldwide who went to him with questions, particularly the young. Besides these activities, Jean-Paul Colin was member of the editorial board of several international journals: A Stereo Atlas of Ostracod Shells, African Geosciences Journal, Annales de Paléontologie, Open Journal of Paleontology, and the Paleontology Journal. He was associate editor of Carnets de Géologie and Revue de Micropaléontologie. Jean-Paul Colin was a member of several scientific societies (Société Géologique de France, The Micropalaeontological Society, The International Paleontologists Association, Association des Paléontologues Français, Association des Géologues du Sud-Ouest). He was also actively involved for many years in the life of the Réserve Naturelle de Saucats-La Brède (Natural Reserve of Saucats-La Brède). After 2000, he was the soul and inspiration for the meetings of the Ostracodologistes de Langue française that he opened up beyond the French-speaking community. He will remain a focal point for the community and a facilitator hard to replace.- Jean-Paul_Colin.- Handle-ID: http://hdl.handle.net/2042/51849

· About the generic attribution of Megatyloceras casei Humphrey, 1949 (Ammonoidea, Ancyloceratina), from the Aptian of Mexico. Josep A. Moreno-Bedmar& Gérard Delanoy.- In the present work we review the generic attribution of the Mexican ammonoid species Megatyloceras casei Humphrey, 1949, through a careful examination of the holotype housed in the University of Michigan and with reference to new biostratigraphic data from the type locality. We assign here this species to the subfamily Cheloniceratinae and to the genus Epicheloniceras Casey, 1954.- CG2013_L06.- Handle-ID: http://hdl.handle.net/2042/51826

· Daniel?hlert (1849-1920) : biographie scientifique et bibliographie. Christian C. Emig.- DanielŒhlert a fait toute sa carrièreà Laval (Mayenne, France). Ses fonctions de bibliothécaire de la ville de Laval, puis de conservateur des musées d'archéologie et d'histoire naturelle de Laval, lui laissaient une indépendance pour se consacrerà la paléontologie età la géologie. Avec sonépouse Pauline, ils partageaient leurs recherches entre desétudes sur le terrain dans la Mayenne et la Sarthe et de longs séjoursà Paris, surtoutà la Sorbonne. Les travaux d'Œhlert ont principalement porté sur les peuplements des mers paléozoïques du Maine, de l'Anjou et du Cotentin.Œhlert se consacra plus particulièrementà l'étude des Crinoïdes, des Trilobites et surtout des Brachiopodes. Dans leur collection, déposée au Musée des Sciencesà Laval, on compte plus de 20 nouveaux genres avec plus de 150 nouvelles espèces d'invertébrés. L'œuvre géologique et stratigraphique d'Œhlert est largement originale ; elle ne concerne pratiquement que des terrains paléozoïques des départements de la Mayenne et de la Sarthe et, accessoirement, des départements de l'Orne et de l'Ille-et-Vilaine. En 1884, il devient collaborateur au Service de la Carte géologique de France. Une centaine de publications s'échelonnent de 1877 pour s'arrêter brutalement en 1911 avec le décès de sonépouse Pauline. La liste de tous ses travaux est fournie.- CG2013_A08.- Handle-ID: http://hdl.handle.net/2042/51825

· Revision of the Jesse Harlan Johnson Collection. Part 1. Some fossil Dasycladales from Guatemala. Bruno Granier, Rajka Radoičić& Katica Drobne.- This first report is a revision of fossil calcareous green algae (Dasycladales) described from the Upper Cretaceous and Paleocene series of Guatemala. Among other things in their 1965 paper J.H. Johnson and H.V. Kaska introduced three new species originally referred to the genera Acroporella, Cylindroporella, and Cymopolia. One species, which has previously been referred to the genus Cylindroporella, is a foraminifer.- CG2013_A07.- Handle-ID: http://hdl.handle.net/2042/51824

· Paleotropical pollen grains from the Neuqun Group, Patagonia, Argentina. Patricia Vallati.- This paper discusses the presence of elater-bearing pollen grains and other characteristic paleotropical palynomorphs in the mid to Late Cretaceous Neuquén Group at the El Zampal locality, south of Mendoza Province, Argentina. The elaterates characterize the equatorial paleofloristic province in the Albian-Cenomanian. The species Elateroplicites africaensis is present in the pollen assemblage recovered from the lower section of the Huincul Formation, a basal unit of the studied Neuquén Group. It represents the first record of elater-bearing pollen grains in Argentina and marks their southernmost extension. Other conspicuous paleotropical elements recorded in different lithostratigraphic units of the Neuquén Group include gymnospermous polyplicate pollen grains and angiosperm pollen, including two species of the periporate pollen genus Cretacaeiporites and the triporate pollen species Confossia vulgaris. The paleobiogeographic and biostratigraphic significance of the paleotropical sporomorph record in the Cretaceous palynofloras of the Neuquén Group at El Zampal is herein discussed.- CG2013_L05.- Handle-ID: http://hdl.handle.net/2042/51218

· Praeorbitolina claveli n.sp. (benthic Foraminifera) from the Lower Aptian sensu lato (Bedoulian) of Central Iran. Felix Schlagintweit, Ioan I. Bucur, Koorosh Rashidi& Behnam Saberzadeh.- The new orbitolinid foraminifer, Praeorbitolina claveli n.sp., is described from the Lower Aptian (Bedoulian) of Central Iran. It is characterized by an eccentric embryonic apparatus displaying both a subdivided subembryonic zone and a deuteroconch. The Barremian-Aptian orbitolinid association of this area has a typical northern Tethyan character (e.g.,"associationà Valserina" of Cherchi and Schroeder, 1973).- CG2013_L04.- Handle-ID: http://hdl.handle.net/2042/51217

· Nouvelles donnes sur les ammonites du Valanginien - Hauterivien de la rgion stratotypique de Neuchtel (Jura suisse) : implications biostratigraphiques. Pierre-Olivier Mojon, Antonio Musolino, Stefan Bucher& Bernard Claude.- De nouvelles données sur les ammonites du Valanginien supérieur - Hauterivien inférieur apportent des précisions sur le schéma biostratigraphique du Crétacé inférieur de la région stratotypique de Neuchâtel (Jura suisse). Ainsi, Stoicoceras pitrei (Busnardo, 1966) du Calcaire roux limoniteux peutêtre rapportéeà la partie supérieure de la biozoneà Saynoceras verrucosum (sous-zoneà Karakaschiceras pronecostatum) du Valanginien supérieur. Dans l'Hauterivien inférieur, Olcostephanus (O.) variegatus Paquier, 1900, de la partie supérieure des Marnes bleues d'Hauterive et Saynella cf. clypeiformis (d'Orbigny, 1841) des Marnes d'Uttins (sommet de la partie inférieure de la Pierre jaune de Neuchâtel)élargissent l'extension de la biozoneà Lyticoceras nodosoplicatum par rapportà la biozoneà Crioceratites loryi indiquée par Saynella neocomiensis (Baumberger, 1905) et un unique spécimen de Crioceratites cf. gr. loryi (Sarkar, 1955) trouvé en 1907.- CG2013_A06.- Handle-ID: http://hdl.handle.net/2042/51216

· tude de l'espce Ochetoceras (Ochetoceras) canaliculatum (de Buch, 1831) (Oxfordien moyen, Zone Transversarium). Philippe Quereilhac.- L'espèce Ochetoceras (Ochetoceras) canaliculatum (de Buch, 1831), discutée ici, est certainement la plus représentative de la Zoneà Transversarium (Oxfordien moyen) dans le Domaine téthysien (Province méditerranéenne). Elle apparaît dans la Sous-Zoneà Parandieri et semble disparaître dans la Sous-Zoneà Stenocycloides (Oxfordien supérieur, base de la Zoneà Bifurcatus). Elle est fortement représentée dans les populations ammonitiques et possède une large extension géographique. Une analyse montre qu'elle se trouve toujours associéeà des espèces dénommées Ochetoceras (Ochetoceras) hispidum [M] (Oppel, 1863) et Glochiceras (Glochiceras) subclausum [m] (Oppel, 1863) ; de nombreux auteurs ont pensé depuis longtemps qu'il s'agissait d'une seule et même espèce. Ces trois"espèces" sont donc réunies sous la dénomination Ochetoceras (Ochetoceras) canaliculatum (de Buch, 1831) : le macroconque correspondant aux"morphes" canaliculatum et hispidum est polymorphique,évoluant d'un pôle mince vers un pôleépais ; quant au"morphe" subclausum, il s'agit d'un microconque dimorphique sexuel. - CG2013_A05.- Handle-ID: http://hdl.handle.net/2042/51215

· L'Estellon (Baronnies, France), a"Rosetta Stone" for the Urgonian biostratigraphy. Bruno Granier, Bernard Clavel, Michel Moullade, Robert Busnardo, Jean Charollais, Guy Tronchetti& Pierre Desjacques.- Shallow-water assemblages of transported ("freshly reworked") bioclasts (mainly orbitolinids and dasycladales) are observed in the deeper facies of the"Vocontian Trough" (SE France). There these benthic assemblages can be directly correlated with ammonite zones. These new finds give an Early Barremian age to the earliest record of Palorbitolina lenticularis as well as those of four so-called"typical Early Aptian" representatives of the genus Orbitolinopsis. Actually most orbitolinid species recorded from the Late Barremian interval are now found present in Lower Barremian strata at L'Estellon. Some currently used correlation schemes for the Urgonian platforms, that are based on partial stratigraphic distribution ranges for the orbitolinids, --and consequently derived conclusions and hypotheses-- require at least in-depth revisions when they are not definitively refuted- CG2013_A04.- Handle-ID: http://hdl.handle.net/2042/51213

· Ammonitofaune du Barrmien de la coupe de L'Estellon (Baronnies, SE France) : rsultats biostratigraphiques prliminaires. Robert Busnardo, Bruno Granier, Bernard Clavel& Jean Charollais.- L'étude de l'ammonitofaune de la coupe de L'Estellon (département de la Drôme, France) permet de dater lesépisodes de la sédimentation gravitaire dans ce secteur de la"Fosse vocontienne". Ils couvrent pratiquement l'ensemble du Barrémien, depuis la Zoneà Nicklesi jusqu'à celleà Giraudi. Nous n'y avons pas caractérisé de resédimentation bédoulienne, la"barre bédoulienne" auct. correspondant au Barrémien terminal.- CG2013_A03.- Handle-ID: http://hdl.handle.net/2042/51212

· Cornulitid tubeworms from the Ordovician of eastern Baltic. Olev Vinn.- Nine species of cornulitids are systematically described here from the Ordovician of Estonia. The earliest species, Cornulites semiapertus, appears in the late Darriwilian (Middle Ordovician), the next two species appear in the Sandbian and there are a further six new species in the Katian, which indicates a rapid diversification of cornulitids in the Late Ordovician of Baltica. All the studied cornulitids from the Ordovician of Estonia occur in relatively shallow-water normal-marine sediments of a carbonate platform. The cornulitids are found encrusting mostly brachiopod shells (both syn vivo and post mortem).- CG2013_L03.- Handle-ID: http://hdl.handle.net/2042/51214

· Mammifres et reptiles priaboniens du massif de Plat (Haute-Savoie, France). Michel Delamette& Jean Albert Remy.- Une lentille de calcaire marneux induréà la base de la série tertiaire des Grandes Platières (massif de Platé, Haute-Savoie) a livré la plus importante collection de restes de vertébrés actuellement connue dans le Paléogène des Alpes occidentales. Les mammifères ongulés sont représentés par 35 dents attribuéesà 9 taxons (4 périssodactyles et 5 artiodactyles). Cette faune paraît contemporaine de celle de La Débruge (niveau MP 18), datée d'environ -35,5 MA. Le nouveau site, dénommé gisement des Perdrix, est situé stratigraphiquementà 20-35 m en-dessous de celui dans lequel Weidmann et al. (1991) avaient mis au jour quelques restes de mammifères qu'ils ont attribués au niveau MP 20. La nouvelle faune est donc plus ancienne d'environ 1,5 MA. Sa composition et la nature palustre du dépôt suggèrent que les animaux concernés vivaient dans un environnement varié comportant des espaces boisésà proximité de zones humides marécageuses.- CG2013_M02.- Handle-ID: http://hdl.handle.net/2042/50056

· Xerticeras gen. nov., a new genus of micromorphic heteromorph ammonite (Ancyloceratina, Ancyloceratidae) from the lower Aptian of Spain. Gérard Delanoy, Josep Anton Moreno-Bedmar, José J. Ruiz& Domingo Tolós Lládser.- Biostratigraphical and paleontological studies of lower Aptian material from the Eastern Iberian Chain (Spain) have revealed the presence of a new genus of micromorphic heteromorph ammonite: Xerticeras gen. nov. (type species: Xerticeras salasi sp. nov.). This new taxon comes from the Deshayesites deshayesi and Dufrenoya furcata ammonite zones. The size difference observed in the population is considered due to sexual dimorphism.- CG2013_A02.- Handle-ID: http://hdl.handle.net/2042/49315

· An event bed with abundant Skolithos burrows from the late Pridoli (Silurian) of Saaremaa (Estonia). Olev Vinn& Mark A. Wilson.- Abundant Skolithos burrows are here described from a possible regressive event bed at Ohesaare cliff (Pridoli), Saaremaa, Estonia. The vertical, cylindrical burrows are identified as Skolithos rather than Trypanites because they intercept and bypass rather than cut bioclasts in the limestone matrix. The absence of encrustation on the upper bedding surface also is evidence that these traces are soft-sediment burrows rather than hardground borings. We interpret this intensive bioturbation by Skolithos-producing organisms as an indicator of a shallow water paleoenvironment with high hydrodynamic energy.- CG2013_L02.- Handle-ID: http://hdl.handle.net/2042/49316

· Nouvelles donnes palontologiques et stratigraphiques au passage Aptien? Albien dans les Pyrnes arigeoises (France). Jacques Rey, Josep Anton Moreno-Bedmar, Michel Bilotte& Ricardo Martínez.- La découverte d'ammonites du passage Aptien - Albien (biozonesà Hypacanthoplites jacobi età Leymeriella tardefurcata), dans la série urgonienne de la couverture du massif de l'Arize invalide l'attribution antérieure au Clansayésien inférieur proposée sur des arguments paléontologiques non contraints.- CG2013_A01.- Handle-ID: http://hdl.handle.net/2042/48733

· Heteroporella ? paucicalcarea (Conrad, 1970), an Urgonian Dasycladalean alga revisited. Bruno Granier.- When the species Heteroporella ? paucicalcarea (Conrad, 1970) was erected it was left in open nomenclature. Later on new combinations were introduced but did not meet a general agreement among paleophycologists. Considering the current acception of the Dasycladalean families, we ascribe it to the Family Polyphysaceae and subsequently to the genus Clypeina (Michelin, 1845). Its known stratigraphic range is rather brief (Late Hauterivian-Early Barremian), which makes it a good index fossil in Urgonian carbonate platform series. Its geographical distribution is apparently restricted to Western Europe (France, Spain and Switzerland).- CG2013_L01.- Handle-ID: http://hdl.handle.net/2042/48737

· The XXIst Century (the 100th Anniversary) Edition of the"New studies on Triassic Siphoneae verticillatae" by Julius von Pia. Bruno Granier& Nestor J. Sander.- This 21st century edition of Julius von Pia's 1912 memoir entitled"Neue Studienüber die triadischen Siphoneae verticillatae" is brought to you by B. Granier (editing, photomicrographs) and N.J. Sander (translation). The artwork is due to A. Lethiers and B. Granier. The original 24 text-figures and 7 plates [II-VIII] were converted into 125 discrete photomicrographs, 5 figures and 56 videos.- CG2013_B01.- Handle-ID: http://hdl.handle.net/2042/48735

· Rvision des espces Hemidiadema rugosum Agassiz, 1846, et H. neocomiense (Cotteau, 1869) (Euechinoidea, Camarodonta, Glyphocyphidae) du Crtac infrieur du Bassin parisien (France). Arnaud Clément.- Les espèces Hemidiadema rugosum Agassiz, 1846, et H. neocomiense (Cotteau, 1869), petitséchinides réguliers mal connus et sources de nombreuses confusions– de part leur rareté et l'insuffisance de leur description originale par leur auteur respectif–, sont révisées afin de clarifier leurs différences et leur statut taxonomique. Cette révision s'appuie sur l'examen de six exemplaires d'H. rugosum (dont l'holotype, non figuré par son auteurà l'origine) tous provenant du locus typicus et du stratum typicum ("Grès ferrugineux" du Clansayésien [Aptien supérieur sensu gallico] de Grandpré, Ardennes) et sur un unique spécimen d'H. neocomiense provenant du stratum typicum ("Calcaireà Spatangues" de l'Hauterivien inférieur (? Zoneà Lyticoceras nodosoplicatum)) de Ville-sur-Saulx (Meuse), région proche du locus typicus (Auxerre, Yonne)). Pour cette dernière espèce, un néotype est désigné en remplacement de l'holotype non retrouvé. Des remarques sur la paléoécologie et les répartitions géographique et stratigraphique de ces deux espèces sont précisées. La révision de ces deux espèces donne l'occasion de proposer une diagnoseémendée du genre Hemidiadema Agassiz, 1846, Glyphocyphidae peu connu.- CG2013_M01.- Handle-ID: http://hdl.handle.net/2042/48481

· Inflation in the number of monospecific genera in brachiopod: progress or regression? A trivial approach to a real problem. Rémy Gourvennec.- Since the 19th century, about 1800 brachiopod genera or subgenera have been erected for the period covering the Silurian to the Devonian. In recent years, there has been a pronounced increase in the number of genera containing a single species. Without questioning the technological advances, one can, however, question the value and usefulness of monospecific genera both for systematics and palaeogeographical studies. Some editorial policy regarding erection of new monospecific genera and/or the evaluation of calls for projects are now needed.- CG2012_L04.- Handle-ID: http://hdl.handle.net/2042/48396

· Sur l'origine du nom de genre Thecidea, une rvision. Christian C. Emig.- Le genre Thecidea aété illustré avant d'être décrit ce qui a donné lieuà des interprétations diverses et erronées, notamment par des auteurs anglophones. Ce travail montre qu'il doit indubitablementêtre attribuéà Defrance in Cuvier& Brongniart (1822). Les autres descriptions dérivées du nom originel Thecidea sont des nomen nullum, et sont en partie responsable de confusion et d'erreurs avant que ce genre n'éclate en plusieurs nouveaux genres répartis dans diverses autres familles et sous-familles. En outre, Thecidea ne comporte plus aujourd'hui que des espèces fossiles. L'histoire de l'attribution du nom d'auteurà ce genre est décrite en détail au cours du XIXe siècle. L'espèce-type et ses synonymes, ainsi que la classification du genre Thecidea sont mentionnées.- CG2012_A08.- Handle-ID: http://hdl.handle.net/2042/48306

· Mediterranean Neocomian belemnites, part 4: belemnites of the Barremian stratotype section. Nico M.M. Janssen, Arnaud Clément& Willem Bont.- This paper deals with the distribution of belemnites in the latest Hauterivian to early Bedoulian of the Angles Barremian Stratotype Section (ABSS). The distribution of the belemnites in the ABSS is not uniform, mainly due to the inaccessibility of certain beds. To cover this, and to compare the distribution with more proximal settings, we investigated a section to the north of Le Bourguet. The latest Hauterivian sediments mainly yield Hibolithes ex gr. subfusiformis besides some Duvalia ex gr. dilatata. The earliest Barremian sediments deliver a richer association that yields the last Hibolithes spp. The first typical Barremian belemnites occur just one bed above the Hauterivian-Barremian boundary based on ammonites. This belemnite association (BaBA1) consists of Duvalia ex gr. silesiaca-gagrica, Duvalia pontica and several species of Hibolithes. At the boundary between the Nicklesia pulchella and the Kotetishvilia compressissima zones the diversity increases and the first classical Barremian belemnites occur. These were formerly attributed to Mesohibolites (BaBA2). These species are herein attributed to a new genus Shvetsovia. Together with the duvaliids from BaBA1 they were first described from Abkhasia by Shvetsov (1913). The latest Early Barremian (BaBA3) and the earliest Late Barremian (BaBA4) show well diversified belemnite associations, with many classical species, dominated by few genera closely resembling the true Mesohibolites. Eventually, these belemnite associations are compared to more proximal sections within the Vocontian Basin, and areas outside the Vocontian Basin (chiefly Hungary and Georgia). Some differences in the frequency and abundance of several species in these different palaeogeographical settings are believed to indicate differences in natural habitat. Duvalia ex gr. grasiana appears to be more abundant in more distal sections, while juvenile Mesohibolitidae, Conohibolites and Curtohibolites appear to be more abundant in the more proximal environments. Finally, a biozonation is presented and defined based on the distribution of the belemnites in the ABSS. This biozonation appears applicable in the more proximal sections, although some biozones are diachronous. The first Mesohibolites occur in the Upper Barremian Imerites giraudi Zone. In the Barremian-Bedoulian boundary sediments, as defined in the ABSS, Neohibolites first occurs, but the latter is only dominant in the marly sediments above the"calcareous Bedoulian". In the Late Barremian-early Bedoulian seven main belemnite associations can be distinguished, viz. BaBA5, BaBA6, BaBA7, BdBA1, BdBA2, BdBA3 and BdBA4. The following new species and genera are described: Hibolithes keleptrishvilii sp. nov. (latest Hauterivian), Duvalia vermeuleni sp. nov. (Early Barremian), Curtohibolites (?) bourguetensis sp. nov. (Early Barremian), and Shvetsovia gen. nov. (late Early-early Late Barremian). Besides, the Late Barremian yields the new species Mesohibolites anglesensis. Moreover, eleven species are described in open-nomenclature.- CG2012_M02.- Handle-ID: http://hdl.handle.net/2042/48307

· Encrustation and bioerosion on late Sheinwoodian (Wenlock, Silurian) stromatoporoids from Saaremaa, Estonia. Olev Vinn& Mark A. Wilson.- A shallow shelf carbonate platform (pelletal limestone facies) stromatoporoid association from the late Sheinwoodian of Saaremaa (Baltica) contains a diverse assemblage of sclerobionts (both epi- and endobionts). The studied stromatoporoids vary from low domical to extended domical shapes. Cornulites sp. aff. C. stromatoporoides, Conchicolites sp., Anticalyptraea calyptrata, microconchids, tabulate (Aulopora sp., Catenipora sp. and favositids) and rugose corals, sheet-like trepostome bryozoans, and discoidal crinoid holdfasts encrust the stromatoporoids. The dominant sclerozoans were tabulate and rugose corals, which is significantly different from several analogous Silurian sclerobiont communities. There may have been taxonomic polarity between an upper surface and a cryptic sclerozoan community. Bioerosion occurs as macroborings in 45.5 % of studied (N=22) stromatoporoids. Endobionts were represented by Trypanites and Palaeosabella borings, as well as embedded symbiotic rugose corals and Cornulites stromatoporoides.- CG2012_A07.- Handle-ID: http://hdl.handle.net/2042/47551

· A new upper Bedoulian section in the Aptian stratotypic area: Croagnes (5 km NW of Gargas, Vaucluse, SE France). Michel Moullade, Guy Tronchetti, Christine Balme& Pascal Mauroux.- The discovery and exploitation of a new outcrop of the"A1 Unit of yellow marls and marly limestones" of Leenhardt (1883), comprised between the Urgonian limestones and the"Aptian marls" of the authors, leads to question the generalized attribution of this formation to the Deshayesites grandis ammonite Subzone. Data from this section at Croagnes rather lead to place A1, at least locally in the stratotypic area of the surroundings of Apt, at the level of the onset of the anoxic event OAE1a, just below the Roloboceras hambrovi Subzone. The assumed isochroneity of this Unit is also questioned.- CG2012_L03.- Handle-ID: http://hdl.handle.net/2042/47550

· Presence of Frambocythere Colin, 1980, (limnic ostracode) in the Maastrichtian of the Zagros Mountains, Iran: a newly recognized link between southern Europe and the Far East. Jean-Paul Colin, Hossein Vaziri-Moghaddam, Amrollah Safari& Samira Shariari Grai.- The limnic ostracode Frambocythere tumiensis zagrosensis subsp. nov. (Limnocytheridae, Timiriaseviinae), has been found for the first time in Iran. The strata containing this species are in the lower part of the Tarbur Formation in the interior Fars of the Zagros Mountains. The Late Maastrichtian age is indicated by rudists, larger foraminifers (Omphalocyclus macroporus, Loftusia spp.) and planktonic foraminifers (Contusotruncana contusa-Racemiguembelina fructicosa Zone) present in the upper part of the Tarbur Formation. The Maastrichtian age is confirmed by the occurrence in the same strata of the charophytes Platychara shanii, Peckichara cristellata and Stephanochara cf. producta. The genus Frambocythere Colin, 1980, was until now known mostly from the Upper Maastrichtian to Middle Eocene of southern Europe, India and China, as well as the Albian of the Democratic Republic of Congo. The presence of Frambocythere gr. tumiensis in Iran is therefore a newly recognized link between southern Europe and the Far East (China).- CG2012_L02.- Handle-ID: http://hdl.handle.net/2042/47503

· tude des faunes de Phylloceratoidea des marnes valanginiennes de Senez-Lioux (Alpes-de-Haute-Provence). Comparaison avec quelques localits de la Drme et de l'Ardche. Bernard Joly& Philippe Mercier.- La récente révision critique de la Paléontologie française de d'Orbigny (1840-42, tome premier, texte et atlas, Terrains crétacés) ayant permis de mieux fixer le statut de l'Ammonites calypso (d'Orbigny, 1841), il s'avérait utile de préciser l'âge de l'espèce, au moins dans sa localité-type. Les auteurs du présent mémoire ont eu d'abord comme objectif de rechercher d'autres spécimens de l'espèce calypso dans les marnes valanginiennes de Senez-Lioux afin de lui attribuer unâge le plus fiable possible. Les Phylloceratoidea ne permettant pas une datation précise des niveaux de récolte des spécimens les auteurs ont déterminé les ammonites sur cinq niveaux successifs. Ce travail a permis de mettre enévidence le Valanginien inférieur et deux zones du Valanginien supérieur (zoneà Verrucosum et zoneà Peregrinus ?), la présence de cette dernièreétant moins certaine. La zoneà Furcillata, du Valanginien supérieur, n'a pasété mise enévidence. Les Phylloceratoidea abondentà Senez-Lioux. Six espèces ont puêtre identifiées : Phylloceras (Hypophylloceras) serum (Oppel, 1865), Phylloceras (Hypophylloceras) tethys (d'Orbigny, 1841), Sowerbyceras calypso (d'Orbigny, 1841), Ptychophylloceras (Semisulcatoceras) semisulcatum semisulcatum (d'Orbigny, 1841), Ptychophylloceras (Semisulcatoceras) semisulcatum (d'Orbigny, 1841) diphyllum (d'Orbigny, 1841), Phyllopachyceras rogersi (Kitchin, 1908), ainsi qu'une nouvelle espèce Phylloceras (Goretophylloceras) liouxense n. sp. Cette espèce aété mise enévidence grâce au matériel récolté dans les Alpes-de-Haute-Provence et dans la Drôme (où le matériel aété récolté par Laurent Vareilles et Philippe Mercier). Toutes ces ammonites sont de petite taille de 5à 28 mm. Dans les marnes valanginiennes il existe aussi des spécimens de diamètre inférieurà 5 mm, ils n'ont puêtre déterminés et ne figurent pas dans cetteétude. Cet ensemble paraît avoirété constitué par le naissain et de jeunes individus, le Bassin vocontien ayantété longtemps, semble-t-il, l'un des lieux de reproduction des Céphalopodes. La petite taille des spécimens n'est pas liéeà leur nature pyriteuse ou en pyrite transformée en oxydes de fer, limonite par exemple. Il existe dans les faciès marneux de très grands spécimens pyriteux, parmi les plus grands connus (Joly, 2000, p. 173). Les plus petits spécimens de Senez-Lioux ne sont pas des adultes de petite taille, on n'observe pas le resserrement des dernières cloisons témoignant du ralentissement de croissance des adultes. Le début de la loge présent chez beaucoup de spécimens prouve que ces spécimens n'étaient pas des nuclei de spécimens plus grands. Ils n'avaient certainement pas atteint la maturité sexuelle. Le grand nombre de spécimens récoltés a permis uneétude statistique des populations (ou assemblages, terme préférable en paléontologie) surtout pour les espèces Phylloceras (Hypophylloceras) serum (Oppel, 1865), Phylloceras (Hypophylloceras) tethys (d'Orbigny, 1841), Phylloceras (Goretophylloceras) liouxense n. sp., Ptychophylloceras (Semisulcatoceras) semisulcatum semisulcatum (d'Orbigny, 1841) et Ptychophylloceras (Semisulcatoceras) semisulcatum (d'Orbigny, 1841) diphyllum (d'Orbigny, 1841). Les espèces Sowerbyceras calypso (d'Orbigny, 1841) et Phyllopachyceras rogersi (Kitchin, 1908) sont représentées par de plus rares spécimens. Les récoltes de la Drôme et l'Ardèche ont permis de compléter nos connaissances sur les faunes valanginiennes du Bassin vocontien. En particulier, c'est le cas pour l'espèce Ptychophylloceras (Semisulcatoceras) semisulcatum semisulcatum (d'Orbigny, 1841) très rare (un seul spécimen identifiéà Senez-Lioux) mais plus abondante dans les gisements valanginiens de la Drôme.- CG2012_M01.- Handle-ID: http://hdl.handle.net/2042/47505

· Proposal for the Thuoux section as a candidate for the GSSP of the base of the Oxfordian stage. Dominique Fortwengler, Didier Marchand, Alain Bonnot, Rémi Jardat& Daniel Raynaud.- The Thuoux section, located in South-Eastern Basin of France (coordinates: 44°30'55"E; 5°42'25"N), is a section that satisfies numerous demanding criteria as reference section (GSSP) for the base of the Oxfordian stage. Sedimentation was continuous in that the abundant ammonitic fauna yields no detectable hiatuses. The stratigraphic boundary is located between the Lamberti Zone and the Mariae Zone or more precisely between the Paucicostatum horizon (Marchand, 1979) and the Thuouxensis horizon (Fortwengler& Marchand, 1994a). In this section, there is a perfect mixing between Boreal ammonites (Cardioceratinae) whose species are used as stratigraphic markers and Submediterranean/Subboreal ammonites (Hecticoceratinae, Peltoceratinae and Perisphinctinae) that provide further possibilities for wide correlation of this boundary. Finally, parallel ammonite zonations have been established with great precision (biohorizons and sometimes"sub-biohorizons") in various areas of France, with different palaeoenvironments. The Thuoux section permits correlations with central and eastern Europe as well as North America, based on Cardioceratinae successions, and with South America, using Peltoceratinae. Thickness of the Callovian-Oxfordian transitional beds in the Thuoux section has allowed detailed sedimentological studies and astronomical calibration of the Lower Oxfordian (Boulila, 2008; Boulila et al., 2008). The Thuoux section is located at the centre of a set of more than thirty sections where the base of the Oxfordian stage is visible (Fortwengler, 1989; Fortwengler& Marchand, 1994a, b, c, d).- CG2012_A06.- Handle-ID: http://hdl.handle.net/2042/47431

· Hunting for the 405-kyr eccentricity cycle phase at the Cretaceous-Paleogene boundary in the An Settara section (Kalaat Senan, central Tunisia). Michel Hennebert.- The Aïn Settara section (Kalaat Senan, central Tunisia) shows a continuous and well exposed marl-limestone alternation, extending from the Upper Maastrichtian to the basal Danian. The section reveals the superposition of several cycles, which correspond to the combined astro-climatic effect of both eccentricity and precession. Based on the ~100-kyr eccentricity and the ~21-kyr precession cycles, a floating chronometric scale is proposed. Thanks to this scale, the sedimentary and biological events of the section are dated with respect to the Cretaceous-Paleogene (K-Pg) boundary taken as the reference. Highlighting the very stable 405-kyr eccentricity cycle allows on one side to confirm the relevance of the established time scale and on the other side to determine the phase of this important signal with respect to the K-Pg boundary event.- CG2012_A05.- Handle-ID: http://hdl.handle.net/2042/47314

· Paleontologic and stratigraphic overview of the Paleogene in eastern Saudi Arabia. Nestor J. Sander.- The beds of early Tertiary age in eastern Saudi Arabia are in large part chemical precipitates laid down in a shallow epicontinental sea. The sequence is divided into three formations, each clearly differentiated in both lithology and fauna. From bottom to top they have been named the Umm er Radhuma, Rus and Dammam formations. Ecologic conditions remained more or less uniform for considerable lengths of time. Consequently, the fauna, made up mainly of foraminifera, became well adapted to the environment, as demonstrated by the abundance of some species. The great number of individuals of these species have a range of variability much broader that that seen in other areas of their occurrence. The detailed study of these variations has demonstrated that species have often been defined on too small a number of individuals. The abundance of specimens has allowed evolutionary trends in species to be traced even to the extent that in the end some variants must be classed as a discrete genus.- CG2012_A04.- Handle-ID: http://hdl.handle.net/2042/47293

· Shell repair in Anticalyptraea (Tentaculita) in the late Silurian (Pridoli) of Baltica. Olev Vinn.- Shell repair is common in the late Silurian (Pridoli) encrusting tentaculitoid tubeworm Anticalyptraea calyptrata from Saaremaa, Estonia (Baltica), and is interpreted here as a result of failed predation. A. calyptrata has a shell repair frequency of 29 % (individuals with scars) with 17 specimens. There is probably an antipredatory adaptation, i.e. extremely thick vesicular walls, in the morphology of Silurian Anticalyptraea. The morphological and ecological evolution of Anticalyptraea could thus have been partially driven by predation.- CG2012_L01.- Handle-ID: http://hdl.handle.net/2042/46096

· Inconsistencies in proposed annelid affinities of early biomineralized organism Cloudina (Ediacaran): structural and ontogenetic evidences. Olev Vinn& Michał Zatoń.- Cloudina, an important Ediacaran index fossil, is considered as one of the earliest biomineralizing organisms. Its biological affinities have not been fully resolved and phylogenetic links with both annelids and cnidarians have traditionally been suggested. Differences in tube morphology, ultrastructure and biomineralization suggest that Cloudina is not closely related to any recent skeletal annelid (e.g., serpulids, sabellids and cirratulids) and their skeletons are not homologous. The way of asexual reproduction in Cloudina resembles more that of cnidarians. The presence of a closed tube origin (base) in Cloudina is also compatible with the hypothesis of an animal of cnidarian grade.- CG2012_A03.- Handle-ID: http://hdl.handle.net/2042/46095

· Obituary notice: Nestor J. Sander. Bruno R.C. Granier.- Nestor John SANDER (December 5, 1914 - February 11, 2012),"Sandy" for his friends, was a living history book, describing himself as a positivist. (...) Nestor was sent as a junior geologist for his first assignment to Saudi Arabia (...). That was before World War II started and much before the country became known as the major worldwide oil producer. (...) Nestor was one of the founders of Carnets de Géologie: many non-native English speakers will remember him as a very kind and generous person who, for instance, helped them polish their manuscripts.- Nestor_Sander.- Handle-ID: http://hdl.handle.net/2042/48262

· Rvision des espces de brachiopodes dcrites par A. Risso. Christian C. Emig.- Bien que la collection Risso n'ait pasété retrouvée, la liste de douze espèces actuelles et treize espèces fossiles de brachiopodes recensées et décrites par Risso (1826) dans les environs maritimes et terrestres de Nice mérite révision en prenant en compte les mises en synonymie récentes. En y ajoutant Argyrotheca cistellula signalée en 1920, la liste des espèces actuelles de brachiopodes récoltées en mer Méditerranée est restée la même jusqu'en 1994, dateà partir de laquelle elle augmente de deux espèces. Trois des espèces décrites par Risso sous le nom de genre Terebratula lui restent attribuées : Joania cordata, Argyrotheca cuneata, Lacazella mediterranea, elles sont toutes trois l'espèce-type de leur genre. Quant aux espèces fossiles, seules deux ont puêtre identifiées, comme synonymes de Terebratula terebratula. Plusieurs fois critiqué, parfois avec trop de sévérité, pour ses travaux sur les Mollusques, auxquels appartenaient aussià l'époque les Brachiopodes, Risso (1826) comme naturaliste amateur a réalisé un travail parfaitement honorable sur les Brachiopodes, en tout comparableà ceux de la plupart de ses contemporains et successeurs sur ce groupe.- CG2012_A02.- Handle-ID: http://hdl.handle.net/2042/45933

· Distribution des assemblages de brachiopodes dans l'Oxfordien du centre de la France. Annick Boullier& Rosemarie Filippi.- En Berry, province située au centre de la France, les dépôts oxfordiens sont représentés par une succession de formations bien individualisées et datées où les brachiopodes ontété plus particulièrementétudiés. Plusieurs cortèges de brachiopodes ontété mis enévidence pouvant fournir des indications sur les datations des niveaux. Certains ontété reconnus dans des régions plus ou moinséloignées permettant d'établir des corrélations.- CG2012_A01.- Handle-ID: http://hdl.handle.net/2042/45932

· Xenobrochus norfolkensis (Brachiopoda: Dyscoliidae), a new species from the Norfolk Ridge, New Caledonia, South-West Pacific. Maria A. Bitner .- The genus Xenobrochus, with the type species Gryphus africanus Cooper, 1973, was erected for short-looped brachiopods of small size, rectimarginate and having a loop with anteriorly convex transverse band. A new species of Xenobrochus, X. norfolkensis sp. nov. has been identified in the material collected during the French cruises SMIB 8, NORFOLK 1 and NORFOLK 2 to the Norfolk Ridge, New Caledonia, SW Pacific. This species differs from those hitherto described in the absence of cardinal process and relatively wide outer hinge plates. The genus, represented now by nine species, has a distribution restricted to the Indian Ocean and West Pacific.- CG2011_A05.- Handle-ID: http://hdl.handle.net/2042/45792

· The Early Aptian (Early Cretaceous) ammonites from the Aralar Mountains, Basque-Cantabrian Basin, Northern Spain. Seyed N. Raisossadat.- The Aralar Mountains located in northern Spain exposes a 983-m-thick succession of sediments of Early Aptian age. The lithological succession evolves from lutites, marls, and calcarenites of the Errenaga Formation to rudist micritic limestones of the Sarastarri Formation, and finally marls, lutites, and sandstones of the Lareo Formation. Based on ammonite assemblage faunas, the Deshayesites oglanlensis, D. weissi, D. deshayesi, and Dufrenoyia furcata biozones have been identified. A transition between the deshayesi and furcata zones with the co-occurrence of the ammonite genera Deshayesites and Dufrenoyia is described in the Aralar succession and is currently unique. The ammonites are described here and correlations are made with other Tethyan regions.- CG2011_M02.- Handle-ID: http://hdl.handle.net/2042/45794

· Manuel de Micropalontologie. Robert Mathieu, Jean-Pierre Bellier& Bruno R.C. Granier.- La micropaléontologie concerneà une division de la paléontologie dont l'objet est l'étude des fossiles de petites dimensions. Ce n'est cependant pas une simple division de la paléontologie, mais un ensemble de sous-disciplines traitant de groupes divers d'organismes qui n'ont en commun que le fait de n'être connus que par des restes fossilisés de petites dimensions. L'outil d'observation le plus communément utilisé est la loupe binoculaire ; il est parfois nécessaire d'avoir accèsà de plus forts grossissements et donc de se servir d'un microscope optique, voire d'un microscopeélectroniqueà balayage. Ce critère dimensionnel fait que la micropaléontologie s'intéresse aussi bienà des organismes microscopiques unicellulaires qu'à des restes (organites) de grands organismes pluricellulaires. Par définition, la nature organique, minéralogique ou mixte de ces fossiles est extrêmement variée ; de ce fait les approches et techniques d'analyse sontégalement variables d'un groupeà l'autre. Ces restes peuvent se classer de la façon suivante : les microfossiles (dimensions comprises entre 0,05 mm et quelques mm) ; les nannofossiles (dimensions inférieuresà 50µm) ; les organites ou fragments isolés de macrofossiles reconnaissablesà leur forme et/ou leurs caractères microstructuraux. Parmi les groupes concernés par la micropaléontologie figurent de nombreux protozoaires (Foraminifères, Radiolaires), des algues unicellulaires (Dasycladales, Coccolithophoracées, Dinoflagellés, Diatomées), des métazoaires libres (Ostracodes) ou coloniaux (Bryozoaires), des métaphytes (Corallinales, Charophytes), des organites de métaphytes (spores et grains de pollens), des formes dont l'interprétation est incertaine (parmi ces incertae sedis, citons : Acritarches, Calpionelles, Chitinozoaires, Gilianelles, etc.). Remarque : Les représentants fossiles des algues benthiques sont parfois improprement désignés dans le langage vernaculaire par le vocable"algues calcaires", termes qui regroupent des formes aussi distinctes que des Chlorophytes (Dasycladales et Bryopsidales), des Rhodophytes (Corallinales), des Charophytes et des structures biosédimentaires d'origine"microbienne". Quelques formes benthiques non calcifiées sont connues uniquement dans des gisements de type"Fossil-Konservat-Lagerstätten" ; ces préservations exceptionnelles ne sont pas décrites dans ce manuel. Les microfossiles sont des indicateurs paléoécologiques des anciens milieux de vie. Les associations et leur taphonomie permettent de caractériser les sédiments continentaux ou marins et de décrypter les conditions de dépôt. Les microfossiles sont aussi les marqueurs des temps géologiques depuis le Cambrien, voire depuis le Protérozoïque pour les seuls palynomorphes (microfossiles variésà paroi organique). Le découpage micropaléontologique du temps est un outil chronologique de plus en plus précis et en perpétuelle amélioration. Beaucoup (Foraminifères, Coccolithophoracées, Dinoflagellés, Chitinozoaires, etc.) sont les index de biozones deséchelles biostratigraphiques de référence pour la datation des couches géologiques. Leur compétitivité tientà leur fréquenceélevée età leur grande diversité dans tous les milieux aquatiques. Les forages d'exploitation pétrolière et les forages scientifiques utilisent en routine les microfossiles pour dater les niveaux traversés. Leur rôle dans la datation des fonds océaniques aété et est encore fondamental. La réalisation des cartes géologiques récentes fait, pour une large part, appel au micropaléontologue.- CG2011_B02.- Handle-ID: http://hdl.handle.net/2042/45793

· The sauropod dinosaur Cetiosaurus Owen in the Bathonian (Middle Jurassic) of the Ardennes (NE France): insular, but not dwarf. Eric Buffetaut, Bernard Gibout, Isabelle Launois& Claude Delacroix.- A chevron bone from an Early Bathonian oolitic limestone in the Ardennes (NE France) is referred to the sauropod dinosaur Cetiosaurus Owen, previously known from the Middle Jurassic of England, on the basis of its rod-like distal end. This is the first well attested occurrence of Cetiosaurus in France. The presence of Cetiosaurus remains in the Bathonian of both Oxfordshire and the Ardennes is explainable by the fact that these regions were situated on the margin of the London-Brabant Massif land area, on which sauropod populations apparently lived. Contrary to the condition in other sauropods in insular environments, there is no evidence of dwarfism in Cetiosaurus from the London-Brabant Massif, probably because this emergent area was connected to the much larger Fenno-Scandian Shield.- CG2011_L06.- Handle-ID: http://hdl.handle.net/2042/43897

· Evolution of a dense outer protective tube layer in serpulids (Polychaeta, Annelida). Olev Vinn& Elena K. Kupriyanova.- Although the walls of most serpulid tubes are homogeneous, tubes of certain species may contain up to four ultrastructurally distinct layers. Some of these layers are made of densely packed large crystals and others are composed of sparsely packed fine crystals. In almost all (16 of 17) examined species having layered tubes, the dense layer is located in the outer wall part and the layer(s) composed of fine and relatively sparsely packed crystals are positioned in the inner wall part. Two species have transparent tube walls made entirely of densely packed crystals. Fossil serpulid tubes with dense outer layers (DOL) are known from the Late Cretaceous (Pentaditrupa subtorquata) and the Eocene (Pyrgopolon cf. mellevillei and Rotularia spirulaea). DOL gives a characteristic smooth shiny appearance to the tube surface and presumably evolved as an adaptation against drilling predation by gastropods and to delay shell dissolution in the waters of the deep-sea under-saturated with calcium carbonate.- CG2011_L05.- Handle-ID: http://hdl.handle.net/2042/43896

· Aptian ammonites of Abu Dhabi (United Arab Emirates). Robert Busnardo& Bruno R.C. Granier.- The identification of some twenty ammonite fragments from oil wells drilled in offshore Abu Dhabi revealed the presence of six Aptian genera: Cheloniceras, Epicheloniceras, Gargasiceras, Colombiceras, Pseudohaploceras, and Macroscaphites. These ammonites indicate the Furcata Zone and the succeeding Martini Zone. The Gargasian age of the upper part (HST) of the Shu'aiba as well as that of the whole of the Bab are thus firmly established.- CG2011_L04.- Handle-ID: http://hdl.handle.net/2042/43895

· Source and evolution of the clinopyroxenes in the Loire and Seine basins (France) based on grain morphology and color. RobertÉtienne& Jean-Pierre Larue.- Variation in the characteristics (color, morphology) of clinopyroxene grains (CPX) in alluvial deposits and other surficial formations in the Loire valley, the Gâtinais and the Beauce show that many are pristine and come directly from recent volcanic eruptions, whereas weathered grains, clearly reworked, come from erosion of Cenozoic and Pleistocene volcanic rocks of the French Massif Central. After deposition, the CPX have been increasingly altered by longer exposures. Weathering of brown CPX yields paler minerals which are greenish-brown, colourless or two-coloured. Similarly, the CPX found in the Seine basin are from recent volcanic ash or old Sologne deposits, and not from Loire alluvial deposits, so that a Pleistocene palaeo-Loire-Seine river is improbable.- CG2011_L03.- Handle-ID: http://hdl.handle.net/2042/43894

· Catalogue of the Eocene mammal types of the Natural History Museum Basel. Loïc Costeur& Martin Schneider.- This catalogue presents a list of the Eocene mammalian type specimens held in the collection of the Natural History Museum Basel (Naturhistorisches Museum Basel, hereafter NMB). After a close inspection of the very rich Eocene collection (several tens of thousands of specimens), a total of 51 valid holotypes (plus 16 invalid species) were identified together with 21 valid lectotypes and several hundreds paratypes, paralectotypes and syntypes. These types belong to 123 originally described species, of which 99 are still valid, 30 having been moved to another genus.- CG2011_B03.- Handle-ID: http://hdl.handle.net/2042/43898

· Cenozoic Dasycladales. A photo-atlas of Thanetian, Ypresian and Bartonian species from the Paris basin. Patrick Génot& Bruno R.C. Granier.- Cenozoic Dasycladales of the French sedimentary basins are noteworthy for the exceptional quality of their preservation. Although most fossil Dasycladales are known only in thin sections often difficult to interpret, the coatings of the Dasycladales in these basins, particularly in the Paris basin, are easy to extract from sandy sediments and then are examined under the electron microscope. This method of investigation facilitates greatly the identification of the external and internal features of each species.- CG2011_SP01.- Handle-ID: http://hdl.handle.net/2042/43105

· Computer-aided identification of the Archaeocyatha genera now available online. Adeline Kerner, Régine Vignes Lebbe& Françoise Debrenne.- The Archaeocyatha are a key group in several of the many discrete disciplines that together make feasible a valid history of the Earth: they are the oldest of the calcified sponges, the first metazoans to build reefs (in association with calcimicrobes), are characteristic fossils used for the biozonation of the first, pre-trilobitic Cambrian stage (Tommotian)… To date, a valid key to their identification has not been available, so a tool for that purpose has been devised: it was created using the software XPER2, and is now available free, online. Published in English, the knowledge base includes the 307 valid described genera identified by 120 descriptors (85 morphological and ontogenetic, 8 stratigraphic and geographic and 27 taxonomic). A key to identification is supplemented by detailed descriptive cards with images of type specimens of each genus and details of their morphology that aid identification.- CG2011_L02.- Handle-ID: http://hdl.handle.net/2042/42329

· Un gisement d'ostracodes non-marins dans l'ocne infrieur du Djebel Amour, Atlas saharien central, Algrie : taxonomie, palocologie et palobiogographie. Fateh Mebrouk, Jean-Paul Colin& Fatima Hennache.- Un gisement bien daté par une riche microflore de charophytes caractéristique de la zoneà Peckichara disermas, de l'Éocène inférieur (Yprésien inférieur = Sparnacien = Ilerdien) a livré une intéressante association d'ostracodes non-marins dans le Djebel Amour, Atlas Saharien occidental, en Algérie. Cette faune est caractérisée par la dominance du genre Neocyprideis avec l'espèce nouvelle Neocyprideis meguerchiensis nov. sp. et la présence occasionnelle des genres Hemicyprideis, Perissocytheridea (P. algeriensis nov. sp.) et Limnocythere. Il s'agit de la seconde découverte du genre Neocyprideis dans le Paléogène du continent africain, la premièreétant dans l'Éocène inférieur du Sénégal. Les Neocyprideis sont représentésà 75 % par des formes lisses, normalement calcifiées,à 20 % par des individus réticulés et tuberculés età 5 % par des spécimens uniquement réticulés. Ce polymorphisme suggère une saisonnalité marquée avec une salinité variable. La dominance des morphes lisses bien calcifiés indique un milieu avec unéquilibre entre le Ca++ et le Mg++, les morphes réticulés caractérisant un milieu plus riche en Mg++. La présence de forme tuberculées-réticulées suggère des apports saisonniers organo-siliceux continentaux et une salinité pouvant temporairement atteindre des valeurs inférieures ouégalesà 5 psu.- CG2011_A04.- Handle-ID: http://hdl.handle.net/2042/42328

· Distribution des ostracodes dans les sdiments de subsurface de la Sebkha El-Guettiate (Skhira, golfe de Gabs). Intrt pour la reconstitution des palo-environnements de l'Holocne. Chahira Zaîbi, Fekri Kamoun, Pierre Carbonel& Mabrouk Montacer.- L'étude quantitative et qualitative des ostracodes des carottes SG1 et BSC2, prélevées au niveau de la Sebkha El-Guettiate de Skhira (Sud - Est Tunisien), nous a permis de reconnaître les trois associations suivantes : (1) association de milieu marin s.l. composée de Aurila prasina Barbieto-Gonzalez, 1971, Cushmanidea elongata (Brady, 1868), Urocythereis oblonga (Brady, 1866), U. favosa (Roemer, 1838) (marin côtier), Basselerites berchoni (Brady, 1869), Semicytherura incongruens (G.W. Müller, 1894), S. paradoxa (G.W. Müller, 1894), S. sella (Sars, 1866), S. ruggierii (Pucci, 1955), Carinocythereis carinata (Roemer, 1838) et Paracytheridea depressa (G.W. Müller, 1894) (marin ouvert) ; (2) association de milieu lagunaire,à salinité variable, constituée, de Xestoleberis aurantia (Baird, 1838), Leptocythere fabaeformis (G.W. Müller, 1894) et Cytherois fischeri (Sars, 1866), (3) association de milieu saumâtre estuarien où se développent Cyprideis torosa (Jones, 1850) et Loxoconcha elliptica Brady, 1868. Ces associations révèlent les caractéristiques des paléo-environnements qui se sont succédés, au cours de l'Holocène supérieur,à l'emplacement de la Sebkha El-Guettiate. Trois phases peuventêtre reconnues : i) la première phaseà caractère lagunaire estuarien dominant (6595± 120à 6055± 30 ans B.P.) comprend un environnement lagunaire ouvert riche en ostracodes marins dominantsévoluant brutalement vers un environnement lagunaire estuarien. Ce dernier est caractérisé par unévènement de hauteénergie, vers 6595± 120 ans B.P., révélé par des apports détritiques riches en galets, synchronesà l'enrichissement des ostracodes saumâtres. Ensuite, une lagune s'installe vers 6055± 30 ans B.P. permettant le développement des ostracodes principalement saumâtres dominants mais aussi lagunaires. ii) la phase suivante (6055± 120à 5150± 50 ans B.P.) se distingue par la réapparition des taxons marins associés aux espèces lagunaires et saumâtres traduisant une lagune estuarienne largement ouverte soumiseà l'influence des courants de dérive littorale. Ces courants, enédifiant des cordons littoraux, ont entraîné la fermeture du milieu et la fin de la dominance des ostracodes saumâtres. iii) la dernière phase (5150± 50 ans B.P.à l'actuel) comprend un milieu caractérisé par la richesse des taxons lagunairesévoluant vers un milieu laguno-saumâtre recevant le dépôt de washover suiteà unévénement climatique extrême. La lagune, de plus en plus fermée,évoluera progressivement vers la sebkha actuelle.- CG2011_A03.- Handle-ID: http://hdl.handle.net/2042/42327

· Les"Marnes theoi" de Pamproux (Deux-Svres, France), Sous-zone Antecedens (Oxfordien moyen, Zone Plicatilis) : diversit des faunes et dcouverte de nouvelles espces d'ammonites. Philippe Quereilhac& Yvon Guinot.- Deux coupes effectuéesà Doux et Pamproux, dans le département des Deux-Sèvres (Poitou, France), ont misà jour la base de l'Oxfordien moyen (Zoneà Plicatilis). Seule la coupe de Pamproux (située sur le site de l'usine Pampr'oeuf), dont la Zoneà Plicatilis n'est représentée que par la Sous-zoneà Antecedens, estétudiée dans le détail. Les collectes ontété effectuées in situ et dans les déblais constitués uniquement de marnes attribuéesà la Sous-zoneà Antecedens. Le lavage des sédiments a permis de collecter un très grand nombre de fossiles très diversifiés et de tailles extrêmement réduites. C'est ainsi que furent découverts un grand nombre d'individus appartenantà deux nouvelles espèces de Taramelliceratinae, ainsi que deux nouvelles espèces de Glochiceras, de taille adulte bien différentes, ressemblantà s'y méprendreà Ochetoceras (Ochetoceras) canaliculatum (von Buch, 1831) morphe subclausum [m] Oppel, 1863. La sous-famille des Taramelliceratinae est la faune ammonitique dominante.- CG2011_M01.- Handle-ID: http://hdl.handle.net/2042/42331

· Difficults de datation des niveaux marins plistocnes l'aide de coquilles de mollusques fossiles : cas du niveau ouljien sur la cte du Haut Atlas au Maroc. Abdelmajid Choukri, Oum-Keltoum Hakam& Jean-Louis Reyss.- Afin de comprendre la difficulté de datation des niveaux marinsà l'aide deséchantillons de coquilles de mollusques et d'essayer d'établir des outils méthodologiques pouvant aiderà juger de la validité d'unâge 230Th /234U, nous confrontons 80 analyses radiochimiques d'échantillons de coquilles de mollusques prélevés dans des plages marines fossiles situées entre 4 et 8 m par rapport au niveau de l'eau actuel. les niveaux où ontété faits les prélèvements, analoguesà ceux de la côteégyptienne de la Mer Rouge, sont sensés appartenir au stade climatique 5e datéà 122 ka environ. On note que lesâges obtenus sont souvent rajeunis indépendamment du site, du taux de calcite, de la teneur en uranium et du rapport 234U/238U. Contrairement auxéchantillons de coraux, le critère minéralogique ne peut pasêtre utilisé pour choisir leséchantillons non recristallisés, certaines coquilles de mollusques actuelles sont en aragonite, d'autres sont en calcite et d'autres contiennent les deux formes sans que les rapports de proportion en soient encore bien connus. Devant cette situation, nous avons multiplié les analyses sur deséchantillons de coquilles de mollusques appartenantà plusieurs espèces prélevés aux mêmes endroits afin de comprendre le scénario de rajeunissement desâges et d'essayer d'établiréventuellement des critères méthodologiques pouvant nous renseigner sur la validité de l'âge calculé. Des scénarios sur le mode d'incorporation de l'uranium et son rôle dans le rajeunissement de l'âge ontétéégalement imaginés et discutés.- CG2011_A02.- Handle-ID: http://hdl.handle.net/2042/39245

· Discussion of: Problems in the identity of''Crioceras'' barremense Kilian, 1895 (Ancyloceratida, Late Barremian), and their proposed resolution, by D. Bert et alii (CG2010_A01) [Alternative title: The nomenclatural status and the acceptation of the genus Barrancyloceras Vermeulen, 2000, and of its type species]. Jean Vermeulen.- This work is a reply to the paper of Bert et alii (2010) who contested the validity of the genus Barrancyloceras and its type species. The answers and precisions brought up herein deal with: the nomenclatural status of Barrancyloceras barremense (Kilian, 1895); the nomenclatural status of the genus Barrancyloceras Vermeulen, 2000; the understanding of the species Barrancyloceras barremense (Kilian, 1895); the value, as a subzone index species of subzone, of Barrancyloceras barremense and B. alpinum.- CG2010_A01R.- Handle-ID: http://hdl.handle.net/2042/38798

· The role of an internal organic tube lining in the biomineralization of serpulid tubes. Olev Vinn.- Most known serpulid tube ultrastructures in contact with an organic inner tube lining do not show the direction in which they developed. But spherulitic prismatic structures found in the innermost part of the tube wall of Recent Crucigera websteri, C. zygophora, Floriprotis sabiuraensis, and Pyrgopolon ctenactis indicate that the structure grew toward the organic inner tube lining and also toward the tube‘s lumen. Similar directions of growth for this structure are seen in Hydroides sp. from the Miocene of Austria. Growth towards the tube's lumen is opposite to what one would expect if the organic inner tube lining is being used as a scaffold for the biomineralization of CaCO3.- CG2011_L01.- Handle-ID: http://hdl.handle.net/2042/38798

· The Dichotomus Horizon: proposal for a new biochronologic unit of the Giraudi Zone of the Upper Barremian of southeastern France, and considerations regarding the genus Imerites Rouchadz (Ammonoidea, Gassendiceratinae). Didier Bert, Gérard Delanoy& Stéphane Bersac.- Recent revisions of the genus Imerites Rouchadzé make it possible to introduce a new biochronologic horizon to define more precisely the lower boundary of the Giraudi Zone: the Dichotomus Horizon. Using the concept of'interval zone', this new horizon maintains the current lower boundary of the Giraudi Zone as accepted by authors, and thus contributes to the stabilization of the Barremian zonal system. This stabilization is also strengthened by abandonment of the use of"Crioceras" cristatus d'Orbigny (nomen dubium) that ought not be used as an index species in detriment of Imerites giraudi (Kilian). The classification, origin, and intraspecific variation of the genus Imerites Rouchadzé are examined.- CG2011_A01.- Handle-ID: http://hdl.handle.net/2042/36091

· Lower Devonian faunas and palynomorphs from the Dornes Syncline (Central Iberian Zone, Portugal): stratigraphical and paleogeographical implications. Rémy Gourvennec, José Manuel Piçarra, Yves Plusquellec, Zélia Pereira, José Tomás Oliveira& Michel Robardet.- In the Dornes syncline, southern Central Iberian Zone, Portugal, the uppermost levels of the Serra do Luação Formation up to now have been considered to be of Pridoli-Lochkovian? age because they lie immediately under the Dornes Formation, which is of Pragian age and is well defined stratigraphically. New paleontological elements including benthic faunas and palynomorphs allow us to confirm that the top of the Serra do Luação Formation is securely Lochkovian, for upper Lochkovian strata are present although relatively thin. The transition from the Serra do Luação to the Dornes formations and their lithostratigraphical relationship are now clear: the terrigenous succession belongs to the Serra do Luação Formation and the limestones represent the Dornes Formation. The benthic faunas clearly have North-Gondwanan affinities.- CG2010_A09.- Handle-ID: http://hdl.handle.net/2042/35627

· Systematics, phylogeny and homeomorphy of the Engonoceratidae Hyatt, 1900 (Ammonoidea, Cretaceous) and revision of Engonoceras duboisi Latil, 1989. László Bujtor.- The Engonoceratidae may well have originated on the shallow marine carbonate platforms of the southern margin of the Mediterranean Province of the Tethyan Realm during the earliest Albian (?latest Aptian). In the entire Tethyan Realm and beyond adaptive radiation of the group was rapid and successful during the early Albian as indicated by endemic centres in the Peruvian Basin and the Western Interior Sea (USA). Later the group successfully enlarged its distribution, and invaded some provinces (Mowry Sea, Canada) of the Boreal Realm. The mode of life of engonoceratids seems to have been nektoplanktonic, epipelagic, and stenohaline, restricted to shallow water and platform or in some cases extremely shallow (littoral and lagoonal) facies which may have helped their radiation. The group is distinctive and consists of nine genera and up to a hundred species, although its origin is still obscure. Their appearance may have been triggered by the oceanic anoxic event (OAE 1b) and their rapid rise may have been helped by their shallow water mode of life and the global mid-Cretaceous warming and rise in sea level. The fall of the engonoceratids coincides with the end-Cenomanian rapid transgression, which may have changed their shallow water habitats. Today the group is considered to have been a successful colonizer, a reliable stratigraphical indicator for shallow marine environments and a pioneer taxon for recognition of transgressive phases. Based on new material and sutural analysis, Engonoceras duboisi is revised and assigned to Parengonoceras. A set of features consisting of a simplified ceratitid suture, lanceolate and compressed oxycone shell together comprising a shallow marine ecotype is pointed out as a successful and repeated morphotype among Mesozoic Ammonoidea, for it was repeated three times during ammonoid evolution.- CG2010_A08.- Handle-ID: http://hdl.handle.net/2042/35626

· Early large borings from a hardground of Floian-Dapingian age (Early and Middle Ordovician) in northeastern Estonia (Baltica). Olev Vinn& Mark A. Wilson.- Large plug- or slightly amphora-shaped borings have been found in the hardground marking the boundary between Early and Middle Ordovician rocks in northeastern Estonia. These borings cut large bioclasts of the trilobite Megistaspis and cannot be assigned with certainty to any known ichnotaxon. They indicate that the diversity of early large borings may have been greater than was recognized previously.- CG2010_L04.- Handle-ID: http://hdl.handle.net/2042/35594

· Fossil Phoronida and their inferred ichnotaxa. Christian C. Emig.- Various ichnotaxa found in hard substrates are interpreted as"phoronid" trace fossils. Their records are briefly reviewed. An interpretation of Diorygma found in the shells of brachiopods is not compatible with phoronid morphology and anatomy. Criteria for the discrimination of phoronid burrows and borings from those of similar organisms from others are difficult to establish even when the evidence and conclusions made therefrom are sound.- CG2010_L03.- Handle-ID: http://hdl.handle.net/2042/35531

· L'volution des peuplements d'ammonites au cours de l'Oxfordien infrieur (Zone Mariae et Zone Cordatum) du Jura (Est de la France). Rémi Jardat.- L'étude de plus de 40 coupes entaillant les"marnesà Creniceras renggeri" du Jura français (Oxfordien inférieur) a permis : un découpage biochronostratigraphique fin, soit 16 peuplements successifs, stablesà l'échelle de tout le secteur géographiqueétudié ; la corrélation de ces peuplements avec la zonation adoptée par le Groupe Français d'Étude du Jurassique ainsi qu'avec les séries du sud de l'Angleterre (Weymouth) et de la Pologne (région de Cracovie) ; une approche autécologique et synécologique des faunes du Jura ; leur interprétation en termes de paléoprofondeur et de stratigraphie séquentielle. Les principaux résultats obtenus sont : l'individualisation de la Sous-zoneà Costicardia ; la validation de la subdivision de la Zoneà Mariae proposée par Fortwengler et Marchand (1994), mettant notamment enévidence un horizonà woodhamense surmontant un horizonà scarburgense ; la subdivision de l'horizonà woodhamense en deux unités : l'uneà woodhamense s. s. surmontée d'une autre unité où abonde la var. woodhamense normandiana (Spath) ; la mise enévidence d'une corrélation entre des unités tectoniques de part et d'autre de l'accident de Salins et certaines caractéristiques des peuplements d'ammonites ; l'identification de cinqépisodes d'évolution régionale de la paléoprofondeur pour l'ensemble du Jura qui pourraientêtre interprétées comme des unités séquentielles : unépisode d'approfondissement entre l'horizonà scarburgense et l'horizonà praemartini inclus, une stabilisation du niveau marin pendant l'horizonà alphacordatum, une légère tendance régressive au cours de l'horizonà praecordatum, une nouvelle stabililisation depuis la Sous-zoneà Bukowskii jusqu'à la Sous-zoneà Costicardia, et une nouvelle inversion de tendance au cours de la Sous-zoneà Cordatum.- CG2010_A07.- Handle-ID: http://hdl.handle.net/2042/35492

· Rpartition biostratigraphique des orbitolinids dans la biozonation ammonites (plate-forme urgonienne du Sud-Est de la France). Partie 1 : Hauterivien suprieur - Barrmien basal. Bernard Clavel, Robert Busnardo, Jean Charollais, Marc André Conrad& Bruno Granier.- Une répartition biostratigraphique des orbitolinidés calée sur la biozonationà ammonites aétéétablie pour l'Hauterivien supérieur et le Barrémien inférieur pro parte du SE e la France. Elle est basée sur l'étude de huit coupes de terrain relevées dans le SE de la France, qui ont livré des orbitolinidés, encadrés ou surmontés par des facièsà ammonites associées parfoisà deséchinides et des dasycladales significatifs sur le plan biostratigraphique. Il estétablià cette occasion que trois espèces d'orbitolinidés caractérisent l'Hauterivien supérieur : il s'agit de Praedictyorbitolina busnardoi, Paleodictyoconus beckerae et Valserina primitiva.- CG2010_A06.- Handle-ID: http://hdl.handle.net/2042/33369

· Barremian-Aptian Dasycladalean algae, new and revisited, from the Tirgan Formation in the Kopet Dagh, NE Iran. Morteza Taherpour Khalil Abad, Marc André Conrad, Ali Asghar Aryaei& Ali Reza Ashouri.- Abundant, diversified algal assemblages comprising more than 25 species of Dasycladales are described from Barremian-Aptian limestone deposits of the Tirgan Formation in NE Iran. New species are described: one of them possibly belongs to a new endosporate genus, tentatively assigned the Triploporellaceae; two others, Clypeina ? sp. 1 and Rajkaella ? sp. 1, are left in open nomenclature. The widely distributed, locally abundant Montiella ? elitzae is revisited, because of the presence of a complete, exceptionally well preserved specimen. Yet to be demonstrated, the species is a junior synonym of Turkmenaria adducta Maslov, also originally described from the Kopet Dagh. Other species found in the Arkan section have already been reported from remote locations, primarily in Europe, in areas corresponding to the Northern and/or Southern Tethyan domains. Some of them are known only from the Hauterivian and/or the Barremian, excluding the Aptian, thus dating the lower part of the Arkan section as Barremian, but not excluding the Late Hauterivian.- CG2010_A05.- Handle-ID: http://hdl.handle.net/2042/33368

· The Abiod at Ells (Tunisia): stratigraphies, Campanian-Maastrichtian boundary, correlation. Francis Robaszynski& Moncef Mzoughi.- In central Tunisia near the village of Ellès is Wadi Ed Dam. There the Abiod Formation, underlain by the Kef marls and capped by the El Haria marls, crops out in an almost uninterrupted exposure about 286 m thick. In view of its possible use as a regional litho- and bio- stratigraphic reference section for the southern border of the Tunisian trough it is examined in detail here. Fossils studied include foraminifera (115 samples representing 6 micropaleontologic zones, see chart) and ammonites. The biohorizons established are based on the first (FO) or last occurrence (LO) of certain species of planktonic foraminifers in addition to the FO of already established foraminiferal zonal markers. Ammonite markers found include both the FO and LO of some forms, or just one or the other. The location of the Campanian-Maastrichtian (Cp-Ma) boundary time line at Ellès is established by comparison with that determined at Kalaat-Senan and with that of the international stratotype of Tercis (France), ratified by the International Union of Geological Sciences. At Kalaat-Senan the Cp-Ma boundary is set at the lower third of the upper indurated limestone bar of the Abiod Formation - the Ncham Member. Its location at Kalaat-Senan is based on the upper limit of occurrence of Nostoceras (Nostoceras) hyatti and Pseudokossmaticeras brandti together with the FO of Nostoceras magdadiae, a Maastrichtian ammonite. At Ellès several of these same markers are present, along with the respective planktonic foraminiferal zones. The length in years of some lithologic units and paleontologic zones in the Upper Cretaceous succession of wadi Ed Dam was calculated using cyclostratigraphy. The Abiod Formation represents 13.2 Ma, the Radotruncana calcarata Zone 0.79 Ma, and the Nostoceras (Bostrychoceras) polyplocum Zone 0.97 Ma. A proposed subdivision of the Upper Campanian is recommended at the base of the Bostrychoceras Zone. LI et alii's 1999 proposal for fixing the location of the Cp-Ma boundary at the top of a limestone bed in the El Haria marls is reviewed.- CG2010_A04.- Handle-ID: http://hdl.handle.net/2042/33367

· Short Treatise on Foraminiferology (Essential on modern and fossil Foraminifera). Jean-Pierre Bellier, Robert Mathieu& Bruno Granier.- After some forty years in the academic world and before abandoning a position as an employee of the State educational system to enter the new world of"pensioners", it seemed worthwhile to the first author (J.-P.B.) of this brief discussion to compile a short document that presents a synopsis of the knowledge acquired, taught and put to use for more than four decades. This fascicle reviews only the foraminifers, which, along with calcareous nannofossils, are the fundamental tools of modern biostratigraphy, used for worldwide oceanographic studies and for the correlation of oil wells. It deals essentially with the small foraminifers, that is those of modest size without a complex internal architecture. These include the planktonic foraminifers of which the rapid evolution and great dispersion permit the establishment of reliable biochronologic scales of reference.
This short course is intended for students preparing for the CAPES (Certificat d'aptitude au professorat de l'enseignement du second degré = Certificate of Aptitude for a Professorship of Instruction in the Second Grade), for students working toward the Aggregation in Natural Sciences in pursuit of a scientific career in the universities or in the CNRS (Centre National de la Recherche Scientifique = National Centre for Scientific Research), and for students who hope to work in the oil industry where a specialization in the field of micropaleontology is considered useful and is still valued. It will also interest amateur naturalists and that portion of the general public attracted by the beauties of the microscopic world, now living, or extinct and represented only by fossils.- CG2010_B02.- Handle-ID: http://hdl.handle.net/2042/33629

· Un atlas d'algues calcaires. Carbonifre, Alaska arctique. Bernard Mamet& Alain Préat.- Atlas illustrant 54 genres d'Algues marines associéesà quelques microproblématiques. Ceux-ci sont observés dans les coupes de terrain et les puits de forage du Groupe de Lisburne dans toute l'étendue des Cordillères arctiques de l'Alaska (Brooks Range).- CG2010_SP01.- Handle-ID: http://hdl.handle.net/2042/33628

· Bucurella, a new genus of the Thyrsoporelleae (fossil Dasycladalean algae). Bruno R.C. Granier.- A new genus, Bucurella, is described and figured; it is based on Macroporella espichelensis Deloffre et Ramalho, 1971, a taxon known only from the Late Jurassic. It is characterized by the presence of distinctive whorls, each with three thick and broad (fertile) ramifications. The lateral division formula is 1 F: 3 F: (3x2) F: (3x2x2) F = (1: 3: 6: 12); that is the primary ramification divides into three secondaries which in turn branch dichotomously into tertiaries and again into quaternaries. It and its descendant, Zergabriella, are assigned to the Tribe Thyrsoporelleae.- CG2010_A03.- Handle-ID: http://hdl.handle.net/2042/32425

· Traces de volcanisme explosif dans le Campanien pyrnen aux alentours du stratotype de limite Campanien-Maastrichtien Tercis (SO France, N Espagne). Reprage biostratigraphique avec unetude particulire du foraminifre Radotruncana calcarata. Gilles S. Odin.- Les traces d'unévénement volcanique explosif ontété recherchées dans des affleurements campaniens de faciès plate-forme et de faciès flysch dans le domaine ouest-pyrénéen : Sud-Ouest de la France et Nord de l'Espagne. Le repérage stratigraphique de cetévénement a nécessité uneétude micropaléontologique préalable qui aété productive dans cinq sections principales illustrées ici : Tercis, Peyrata, Rébénacq, Lasseube, Zumaya ainsi que dans trois autres affleurements situés près d'Orthez, de Pau, et en Navarre espagnole. La dissociation acétolytique des carbonates indurés du faciès de plate-forme (Tercis, Peyrata, Navarre espagnole) a permis de compléter les connaissances antérieures acquises notamment sur les niveaux de marnes du stratotype de la limite Campanien-Maastrichtien de Tercis. Dans ce dernier site, des spécimens dégagés de marqueurs biostratigraphiques ontété obtenus pour la première fois. La rareté du foraminifère Radotruncana calcarata n'est pas propreà l'espèce maisà la rareté générale des tests de foraminifères planctoniques dans le faciès de plate-forme du Bassin Aturien. La variété des microproblematica est confirmée avec l'illustration de 2 nouvelles formes, l'une informellement nommée"microsphère ananas" et l'autre Velafer ovatus nov. gen., nov. sp. ;à Tercis, près de 70 espèces sont actuellement distinguées dont 1 seuleétait décrite avant nos travaux. Ces microproblematica permettent un repérage temporel relatif aussi précis que celui dérivé des foraminifères planctoniques. Les traces majeures d'unépisode volcaniqueéruptif connuesà Tercis sont situées dans la zone d'existence de Rd. calcarata, immédiatement au-dessus de la disparition de Tubellus hunzikeri, de l'apparition de Lucernellus aubouini et de celle de Aquilegiella varia, trois microproblematica de distribution restreinte dans la série de Tercis. Les mêmes observations ontété faites dans la section voisine de Peyrata. Les sections du faciès flysch ont livré sans difficulté le foraminifère Rd. calcarata mais les microproblematica sont absents. La durée d'existence du marqueur Rd. calcarata estévaluéeà 0,80± 0,05 Ma.
Toutes les sections atteignant la limite Campanien-Maastrichtien ont livré des Contusotruncana (foraminifère) dont les caractéristiques sont celles des spécimens rapprochés de ou attribuésà C. contusaà Tercis ; ce taxon, différent, de la forme-type, est illustré de nouveau afin de permettre des comparaisons en milieu océanique. Ces nouvellesétudes renforcent le bien-fondé du choix de la Grande Carrièreà Tercis comme stratotype de limite en précisant la chronologie desévénements campaniens et son potentiel de corrélation régional et mondial grâceà la diversité de son enregistrement biologique qui témoigne de l'ampleur de la biodiversité au Crétacé supérieur.
La caractérisation de l'épisode volcanique aété complétéeà Tercis par la découverte de sphérules siliceuses légèrement calco-sodiques, avec des traces de magnésium, aluminium et potassium. Dans le stratotype et les sections voisines, l'activité volcanique aété décelée, en outre, par la présence de kaolinite dans la fraction argileuse et de cristaux de minéraux pyroclastiques : sanidine, biotite, zircon, apatite. Dans les niveaux contemporains du bassin du flysch, l'épisode volcanique est plus difficilement caractérisé par la présence de paillettes de biotite de faciès pyroclastique et de cristaux de zircon automorphes ainsi que, plus rarement, d'apatite automorphe. L'interprétation de ces observations nouvelles pose problème : soit les Pyrénées ontété le siège d'une activité volcanique explosive semblableà celle provoquée par un phénomène de subduction, soit leséléments pyroclastiques ontété apportés par voie aérienne d'une distance de plusieurs milliers de km.- CG2010_A02.- Handle-ID: http://hdl.handle.net/2042/32424

· Restes d'hadrosaure dans le Crtac terminal marin de Larcan (Petites Pyrnes, Haute-Garonne, France). Michel Bilotte, Yves Laurent& Dominique Téodori.- La découverte de deux fragments d'hadrosaure (maxillaire et carré) dans des sédiments marins de la fin du Crétacé (Maastrichtien terminal) est relatée. Si ce type de taphocoenose n'est pas exceptionnel pour des organismes continentaux, sa situationà environ 1 m sous la zoneà iridium de la limite K/T méritait d'être soulignée. Cette présentation permet en outre de faire le point sur des données bio et chronostratigraphiques récemment formulées dans cette région.- CG2010_L02.- Handle-ID: http://hdl.handle.net/2042/32428

· Problems in the identity of"Crioceras" barremense Kilian, 1895 (Ancyloceratida, Late Barremian), and their proposed resolution. Didier Bert, Robert Busnardo, Gérard Delanoy& Stéphane Bersac.- The study of"Crioceras" barremense Kilian was undertaken as a part of the revision of the Hemihoplitidae. This species was considered"classic" and has been used as the index of an Upper Barremian subzone; this usage raises a number of problems. The type specimen from Tyrol was a fragment described and illustrated by Uhlig as Crioceras sp. ind. aff. roemeri. This specimen could not be retrieved, and a topotype could not be collected. Our study revealed that there is both a biostratigraphic hiatus and important differences between conceptions of this species: (1) that ascribed Uhlig's type specimen (Upper Barremian, Tyrol), (2) Kilian's concept of the specimen he found and named"Crioceras" barremense (probably a Camereiceras from the uppermost levels of the Vandenheckei Subzone or from the basal Sartousiana subzone of the Nauvin site, southeastern France) and (3) current interpretations of authors, who often synonymize the type specimen with Gassendiceras alpinum (d'Orbigny), which occurs in the middle of the Vandenheckei Subzone. So there is a real confusion concerning the synonymy of"Crioceras" barremense. The age of Uhlig's type specimen is too imprecise and its preservation too fragmentary to be reliably identifiable, because the same morphology and ornamentation exist in several species of other genera. Therefore, we recommend the use of the species"Crioceras" barremense Kilian be avoided, in particular as an index, along with that of the genus Barrancyloceras Vermeulen for which"C." barremense is used as reference. Some species formerly assigned to this genus have been referred to the genus Gassendiceras Bert et alii. Consequently, we also recommend the Barremense auctorum Subzone be renamed the Alpinum Subzone (new) [index-species: Gassendiceras alpinum (d'Orbigny)], without changing its limits as currently defined. The lower limit of this subzone is indicated by the first occurrence of Gassendiceras alpinum (a new biohorizon, introduced here), a common, easily identifiable species with a well-defined stratigraphic range.- CG2010_A01.- Handle-ID: http://hdl.handle.net/2042/30461

· A pterosaur from the Toarcian (Early Jurassic) of the Ardennes (northeastern France). Eric Buffetaut, Bernard Gibout& Danielle Drouin.- A pterosaur tibia-fibula is described from Toarcian shales ("Marne de Flize") near the city of Charleville-Mézières (Ardennes, northeastern France). The morphology of this element, especially the reduced fibula partially fused to the tibia, suggests that it belongs to the rhamphorhynchid Dorygnathus, which is well represented in the Toarcian Posidonienschiefer of Germany and has also been reported from the Toarcian of Nancy (eastern France).- CG2010_L01.- Handle-ID: http://hdl.handle.net/2042/32427

· Le Gargasien de Gargas (Vaucluse, SE de la France) : synthse des donnes de terrain et rvision de la microfaune de foraminifres et d'ostracodes. Michel Moullade, Guy Tronchetti& Jean-François Babinot.- La coupe de Gargas, stratotype historique de l'étage aptien et du sous-étage gargasien, n'est désormais plus du tout accessibleà l'observation par suite de l'urbanisation.À partir d'un ensemble d'échantillons prélevés en 1966 par l'un d'entre nous, nous avons pu cependant la ré-interpréterà la lumière des résultats d'ordre taxinomique et biostratigraphique acquis récemment sur la base de l'étude des microfaunes de l'Aptien du secteur de La Tuilière, distant d'environ 5 km.
Cette nouvelle interprétation micropaléontologique montre que la coupe historique apparaît en fait tronquéeà sa base, le Gargasien inférieur (non basal) s'y trouvant en contact quasi-direct avec l'Urgonien ; le Bédoulien terminal, marneux, connu plusà l'Ouest (vers le Chêne) ainsi qu'à La Tuilière, manque icià l'affleurement. En effet, dans noséchantillons de la série stratotypique nous avons pu mettre successivement enévidence (de bas en haut) :
* la partie supérieure de la zoneà Praehedbergella luterbacheri et la zoneà Globigerinelloides ferreolensis,
* la zoneà G. barri,
* le tout début de la zoneà G. algerianus,
soit la majeure partie du Gargasien inférieur, le Gargasien moyen et le passage au Gargasien supérieur.
La partie supérieure de la zoneà G. barri et le passageà la zoneà G. algerianus correspondentà une séquence marquée par l'instauration d'un faciès marno-sableux, dont les termes supérieurs ont historiquement fourni des ammonites de l'"horizon de Clansayes" (sensu ante). Cette donnée ne peutêtre confortée par les microfaunes, dont la conservation se dégrade rapidement dans les niveaux détritiques, au point même qu'elles vont quasiment jusqu'à disparaître dans les sables et grès sus-jacents au Clansayésien auct. Par analogie avec le secteur de Banon, distant d'une dizaine de kilomètres, ces termes détritiques du sommet de la Colline de Gargas pourraient appartenirà l'Albien supérieur-Vraconnien.- CG2009_A10.- Handle-ID: http://hdl.handle.net/2042/30051

· Size variations of the vestibula of Krithe gnoma Do Carmo& Sanguinetti, 1999 (Ostracoda): a new procedure for their analysis. Dermeval A. Do Carmo, Ricardo P. Meireles, Paulo A.Z. Suarez& Vinicius M. Mello.- The species Krithe gnoma was described from Holocene sediments on the continental margin of Brazil, where it occurs on both shelf and slope. The shelf distribution of this species is restricted to those areas influenced by the Malvinas current between 32°11' and 22°31'S. K. gnoma was selected due to the excellent resolution of images of the anterior vestibule. So the range in size of the vestibula of this species was used to determine whether or not the dimensions of the anterior vestibule were to some degree related to amount of dissolved oxygen in the water at the sampling site. Female valves of the 7th and 8th instars were measured and their sizes and those of the anterior vestibule were compared. These valves and the reference carapace were collected at six localities in the southern shelf area. The anterior vestibule of right and left valves of the 7th instar and one of the 8th instar from discrete localities were measured. In the reference carapace, the larger left valve also has the larger vestibule. A gerontic 8th instar has valves larger than those of the previous instars, but its vestibula are smaller than those of the 7th instar. The vestibula of the left valves of the 7th instar collected at discrete localities showed consistent differences in size related to the oxygen content of the sampling site. The relationship between vestibule size and oxygen content is inversely proportional. However, the poor correlation factor (R2<<1) of these results are not precise enough to support Peypouquet's hypothesis. But the size of the vestibula of K. gnoma does show some degree of relationship to oxygen content. So it is important to measure the vestibula of species of Krithe using the procedure described here. Rigorous application of this procedure will eliminate the possibility of discrimination based on variations in size due to ontogeny and dimorphism leaving only those related to actual valve size. In any case, variations in the size of vestibula may have a phenotypic origin.- CG2009_A09.- Handle-ID: http://hdl.handle.net/2042/30050

· Nummulus brattenburgensis and Crania craniolaris (Brachiopoda, Craniidae). Christian Emig.- The Brattingsborg pennies are mentioned in medieval texts dating from the middle of the first millennium and many popular medieval legends refer to their occurrence on Ivö Island in the Scania region (Sweden) as brattingsborgpenningar or in Latin as Nummulus brattenburgensis. Actually they are valves of the fossil brachiopod Crania craniolaris originally described by Linnaeus (1758) as Anomia craniolaris from the Upper Cretaceous. Later Retzius (1781) created the genus Crania based on these specimens from Ivö Island and on another species he described under Crania (now Isocrania) egnabergensis from Ignaberga in the Scania region. The scientific history of those two species is reviewed along with that of Danocrania tuberculata (Nilsson, 1826), formerly figured as Craniolites brattenburgicus, from the Danian of Scania. Two legends about these"pennies" are included.- CG2009_A08.- Handle-ID: http://hdl.handle.net/2042/29780

· Nouvelles donnes sur les Charophytes et Ostracodes du Jurassique moyen-suprieur - Crtac infrieur de l'Atlas marocain. Pierre-Olivier Mojon, Hamid Haddoumi& André Charrière.- Les"Couches rouges" continentales du Jurassique moyen-Crétacé inférieur de l'Atlas marocain ont livré de très intéressants nouveaux taxons de charophytes et d'ostracodes lacustres : Aclistochara africana n.sp. (Bathonien), Feistiella atlantis n.sp. (Hauterivien ? - Barrémien inférieur), Cypridea suprajurassica n.sp., Cypridea mohandi n.sp. et Cypridea demnatensis n.sp. (Oxfordien ? - Kimméridgien), Harbinia atlasica n.sp. (Hauterivien ? - Barrémien inférieur). Les nouvelles données micropaléontologiques obtenues depuis 2002 apportent les résultats suivants :
* Dans le Haut-Atlas central, découverte de charophytes et ostracodes dulçaquicoles du Jurassique supérieur (Dictyoclavator ramalhoi, Porochara kimmeridgensis, Aclistochara bransoni, Cypridea suprajurassica, Cypridea mohandi, Cypridea demnatensis), mise enévidence d'une ingression marine restreinte au Barrémien attestée par des ostracodes de milieu lagunaire saumâtre (Harbinia atlasica) et de présumés ostracodes marins Trachyleberididae (cf. Strigosocythere strigosa, Cythereis ? sp., Protocythere ? sp.) associésà d'importants dépôtsévaporitiques gypseux.
* Dans le Haut-Atlas oriental, mise enévidence de charophytes de la limite Jurassique/Crétacé (Porochara maxima du Tithonien terminal-Berriasien).
* Dans le Crétacé inférieur non marin (Hauterivien ? - Barrémien) du Haut-Atlas central, découverte d'assemblages mixtes eurasiatiques e et gondwaniens g de charophytes : Globator (e) et Feistiella (g), et d'ostracodes laguno-lacustres : Fabanella-Cetacella (e), Darwinula-Cypridea-Harbinia (e& g), Salvadoriella-Petrobrasia-Reconcavona-Paracypridea (g).
* Compléments pour la biozonation des charophytes du Crétacé inférieur (intervalle Valanginien supérieur-Barrémien inférieur) avec Globator hemiglobatoroides Mojon n.sp. (Cénozone M7a, N.-E. de l'Espagne) et Globator mutabilis (Cénozone M7b) du N.-E. de l'Espagne et du Maroc (Haut-Atlas central).
* Reconnaissance dans le domaine atlasique du Maroc de plusieursétapes de dislocation de la Pangée et d'ouverture de l'océan Atlantique notamment au Bathonien, au Kimméridgien et au Barrémien.- CG2009_M03.- Handle-ID: http://hdl.handle.net/2042/29781

· Quick look cathodoluminescence analyses and their impact on the interpretation of carbonate reservoirs. Case study of mid-Jurassic oolitic reservoirs in the Paris Basin. Bruno R.C. Granier& Christian Staffelbach.- Cathodoluminescence analyses on samples from Middle Jurassic oolitic limestones allow us to reconstruct the diagenetic history of these oil and gas reservoirs: a succession of events starting with the early, synsedimentary phases of marine cementation and ending with the addition of hydrocarbons to the reservoir. Constraints on the timing of events are derived from their calibration with the chronology of the well-known regional tectonic calendar. Fracturing, due first to the post-Pyrenean extension and then to the Alpine compression, led respectively in Oligocene times to a recharge of the aquifer and a correlative change in cementation, and in Miocene times to the addition of hydrocarbons into the same flow units, this last event blocking diagenesis, at least in the zone above the oil-water contact. Distributions of cements and residual porosity within sedimentary units without stratigraphic significance, called here"pseudo-parasequences", were for the most part inherited from the original depositional facies.- CG2009_A07.- Handle-ID: http://hdl.handle.net/2042/28795

· The Paleocene and earliest Eocene foraminiferal Family Miscellaneidae: neither nummulitids nor rotaliids. Lukas Hottinger.- The Miscellaneidae are divided into two groups of species: forms with a single intercameral foramen and forms with two or a row of multiple foramina. Ten taxa ascribed to this family are revised, amply illustrated and discussed considering both micro- and megalospheric generations. The Family Miscellaneidae is assigned to the Superfamily Nonionacea by reason of their planispiral-involute coiling combined with an interiomarginal position of the foramina. Their combined range covers SBZ zones 2-5 and an area comprising the Central and Western Neotethys including the Pyrenean Gulf. They do not reach the western shores of the Atlantic. Miscellanites meandrinus and Bolkarina aksarayi exhibit extreme morphological features, respectively meandrine alar extensions and expanse chambers. These features are of general interest for the comparative anatomy of the shells of the larger foraminifera in order to understand their biological significance.- CG2009_A06.- Handle-ID: http://hdl.handle.net/2042/28794

· PaleoParks - The protection and conservation of fossil sites worldwide. Jere H. Lipps (ed.)& Bruno R.C. Granier (ed.).-
Chapter 1. PaleoParks: Our paleontological heritage protected and conserved in the field worldwide, by Jere H. Lipps
Chapter 2. The Triassic Guanling fossil Group - A key GeoPark from Barren Mountain, Guizhou Province, China, by Xiaofeng Wang, Xiaohong Chen, Chuanshang Wang& Long Cheng
Chapter 3. The GeoPark of Haute-Provence, France - Geology and palaeontology protected for sustainable development, by Jean-Simon Pagès
Chapter 4. The protection and use of the geological and paleontological heritage in Baja California Sur, Mexico, by Javier Gaitán Morán& AlejandroÁlvarez Arellano
Capítulo 4. El resguardo y aprovechamiento del patrimonio geológico y paleontológico en Baja California Sur, México, por Javier Gaitán Morán& AlejandroÁlvarez Arellano
Chapter 5. Protecting fossil sites in New Zealand, by Bruce W. Hayward
Chapter 6. The Salt Range: Pakistan's unique field museum of geology and paleontology, by Shahid Jamil Sameeni
Chapter 7. Paleontological parks and museums and prominent fossil sites in Thailand and their importance in the conservation of fossils, by Nareerat Boonchai, Paul J. Grote& Pratueng Jintasakul
Chapter 8. Managing fossil resources at the Falls of the Ohio, Indiana and Kentucky, USA: A fossil park in an urban setting, by Alan Goldstein
Chapter 9. Paleo-piracy endangers Vendian (Ediacaran) fossils in the White Sea - Arkhangelsk region of Russia, by Mikhail A. Fedonkin, Andrey Yu. Ivantsov, Maxim V. Leonov, Jere H. Lipps, Ekaterina A. Serezhnikova, Eugeniy I. Malyutin& Yuriy V. Khan
Chapter 10. Copper Canyon track locality (Pliocene) conservation strategies, Death Valley National Park, USA, by Torrey Nyborg
Chapter 11. A possible Late Miocene fossil forest PaleoPark in Hungary, by Géza Császár, Miklós Kázmér, Boglárka Erdei& Imre Magyar.- CG2009_B03

· La faune ammonitique des marnes fossiles ferrugineux de la rgion de Niort, France (Oxfordien infrieur, Zone Cordatum, Sous-Zone Cordatum). Philippe Quereilhac, Didier Marchand, Rémi Jardat, Alain Bonnot, Dominique Fortwengler& Philippe Courville.- The ammonite fauna of the'marls with ferruginous fossils' from the Niort region, France (Lower Oxfordian, Cordatum Zone, Cordatum Subzone).- A new collection of ammonites from the'marls with ferruginous ammonites' in the Niort region (France), previously studied by Grossouvre (1922), provides a large amount of biostratigraphic, paleoenvironmental and paleogeographic information. The fauna is dated Early Oxfordian: Cordatum Zone, Cordatum Subzone, probably the lower part of it. In addition, it is unique in western Europe owing to: 1) the species found of which some appear to be known only in this deposit 2) by the extremely atypical domination of the couple Taramelliceras - Creniceras which represent 2/3 of the specimens. Furthermore, the aspect of the fauna strongly suggests that the habitat was a distal platform unknown in other European strata of the same age. A detailed description of the several species is given, sometimes accompanied by a new taxonomic interpretation.- CG2009_A05.- Handle-ID: http://hdl.handle.net/2042/28697

· La Sous-Famille des Taramelliceratinae (Ammonitina, Haploceratoidea, Oppeliidae) de l'Oxfordien moyen et suprieur (Zone Plicatilis, Sous-Zone Vertebrale - Zone Bimammatum, Sous-Zone Berrense) du Nord de la Vienne, France (Province submditerranenne). Philippe Quereilhac.- Subfamily Taramelliceratinae (Ammonitina, Haploceratoidea, Oppeliidae) from Middle and Upper Oxfordian strata (Plicatilis Zone, Vertebrale Subzone - Bimammatum Zone, Berrense Subzone) of N Vienne, France (submediterranean province).- In the area of northern Poitou studied Taramelliceratinae are present at every level except in the Schilli Subzone, itself possibly absent, and the Stenocycloides Subzone in which only Perisphinctidae and Trimarginites sp. occur. Although some species are known and cited in the literature often, they are figured infrequently or not at all: Taramelliceras (Taramelliceras) dentostriatum (Quenstedt), T. (T.) callicerum (Oppel), T. (Proscaphites) anar (Oppel). Here, the ranges of these species in the stratigraphic succession were determined through their association with other faunas in the same collections, using the presence or absence of known precise stratigraphic markers (for example: Neomorphoceras chapuisi (Oppel) = Transversarium Zone, Luciaeformis Subzone ; Taramelliceras (? Taramelliceras) colleti (Lee) = Rotoides Subzone ;"Epipeltoceras semimammatum" (Quenstedt) = Bimammatum Zone,"Berrense" Subzone, Semimammatum horizon) and/or the disappearance of species with longer ranges (for example: the disappearance of Neoprionoceras lautlingensis (Rollier) which is present in the Parandieri Subzone, but absent in the overlying Luciaeformis Subzone). The ranges of certain species that had been incorrectly located stratigraphically : T. (T.) dentostriatum (Quenstedt), T. (T.) callicerum (Oppel), T. (T.) externnodosum Dorn, have been restored to their true location as determined from their occurrences in the author's collections and in those of other collectors who had noted their stratigraphic relationships to other taxa. It is recommended that the date of creation of the Luciaeformis Subzone and the Nectobrigensis, Luciaeformis and Subschilli horizons (Middle Oxfordian, Transversarium Zone) should be rectified. Currently, these are indicated as having been created in 1984. However, if the author's name, G. Melendez, is correct the date of their creation cannot have been 1984, the year in which the G. Melendez thesis was defended, for the manuscript was published only in 1989. It is also proposed that the Duongi horizon Melendez, 1989, be renamed as the Duongae horizon Melendez, 1989, because the index form, Perisphinctes (Dichotomoceras) duongi Melendez, 1989, is an ammonite species named to honor of A.N. Duong, a woman. The study involved more than fifteen hundred individuals, all collected in the zone investigated. Only the most representative are figured here. The poor state of preservation of the ammonites (encrusted, often worn on one face, with the umbilicus not accessible) did not permit measurement (hence no table) except that of the diameter and sometimes the thickness. Previous studies of this subfamily or these species (Oppel, 1863; Quenstedt, 1887; Loriol, 1902; Lee, 1905; Dorn, 1931; Hölder, 1955) are old. References to this subfamily or its representatives in more recent works are only incidental and rarely include descriptions, drawing or photographs. The existence of many ammonites comprising homogeneous groups but without characteristics in common with known species justifies the creation of new species. Some microconchs have been definitely associated with a macroconch species. For others, a lack of material did not permit the establishment of such a direct link so they have been attached to the supposedly related species with the mention,"aff." (for"affinis"). Nevertheless, although described and figured, these forms remain in open nomenclature. There are some"groups" of ammonites with new characteristics that are here associated with a known species because the differences were not sufficient to create new ones; they are distinguished by"var." (for"variety"). There are also some that are referred to a previously known species because they were based only on a fragment (polymorphism?). In addition, in the zone studied the several taxa of this subfamily permit a relatively detailed stratigraphic breakdown because their existence is limited at a maximum to a subzone. However, an exception is the species Taramelliceras (Proscaphites) anar (Oppel, 1863) which ranges from the Antecedens Subzone through the Rotoides Subzone.- CG2009_M02.- Handle-ID: http://hdl.handle.net/2042/28698

· An additional hadrosaurid specimen (Dinosauria: Ornithischia) from the marine Maastrichtian deposits of the Maastricht area. Eric Buffetaut.- An isolated dinosaur vertebra from the marine deposits of the Maastrichtian type area, near the city of Maastricht (The Netherlands), collected during the 19th century and kept in the palaeontological collection of the Museum für Naturkunde in Berlin, is described as a caudal vertebra of a hadrosaurid ornithopod. Although it cannot be identified with greater accuracy, this specimen is an addition to the still scanty, but growing, record of non-avian dinosaurs from the Maastrichtian type area. This record is heavily dominated by hadrosaurs, which probably reflects a real abundance of this group of dinosaurs in the Late Maastrichtian of Europe.- CG2009_L03.- Handle-ID: http://hdl.handle.net/2042/28153

· Evidence of predation on the vertebra of a hadrosaurid dinosaur from the Upper Cretaceous (Campanian) of Coahuila, Mexico. Héctor E. Rivera-Sylva, Eberhard Frey& José Rubén Guzmán-Gutiérrez.- In sediments of the Aguja Formation (Late Cretaceous: Campanian) at La Salada in northern part of the state of Coahuila, Mexico, numerous fossils of vertebrates have been discovered including Hadrosauridae. One hadrosaur vertebra provides evidence of predation probably by a giant alligator Deinosuchus riograndensis.- CG2009_L02.- Handle-ID: http://hdl.handle.net/2042/28152

· The IMAM case. Additional investigation of a micropaleontological fraud. Bruno R.C. Granier, Monique Feist, Edward Hennessey, Ioan I. Bucur& Baba Senowbari-Daryan.- Starting in 1996 and for almost a decade, M.M. IMAM contributed to twelve papers published in international geological journals. These papers dealt with the micropaleontology and biostratigraphy of Cretaceous to Miocene series from Egypt and Libya. They were abundantly illustrated in order to support the author's findings and interpretations. However most photographic illustrations (189 at least) were fabricated with material lifted from the publications of other authors, commonly from localities or stratigraphic intervals other than those indicated by M.M. IMAM.- CG2009_A04.- Handle-ID: http://hdl.handle.net/2042/25073

· Uppermost Albian biostratigraphy and chronostratigraphy. Robert W. Scott.- The Albian Stage is the highest chronostratigraphic unit of the Lower Cretaceous Series and underlies the Cenomanian Stage of the Upper Cretaceous Series. The Albian is divided into three substages, each of which is composed of two or three zones based on distinctive and phylogenetically related ammonite assemblages. The uppermost zone of the Upper Albian Substage, the Stoliczkaia dispar Zone, is found in many Western European condensed sections. The ammonite assemblage in the thin glauconitic sandstone near La Vraconne, Switzerland, was defined as the'Vraconnian Stage' in 1868. However this concept has been little used and was abandoned in 1963 as part of the Cretaceous chronostratigraphic scale. A recent proposal to resurrect and redefine this stage is based on a number of criteria and very detailed and reliable stratigraphic data. A quantitative biostratigraphic analysis of the ammonite ranges in the key sections shows that the proposed subzones of the S. dispar Zone have discordant ranges. Furthermore, the utility of a'Vraconnian Stage' between the Albian and Cenomanian stages is geographically limited and the concept embraces one of many depositional sequence cycles of the Albian. The reinstatement of a'Vraconnian Stage' is not recommended.- CG2009_A03.- Handle-ID: http://hdl.handle.net/2042/24969

· Pseudoshasticrioceras bersaci nov. sp. (Ammonoidea, Gassendiceratinae), and new ammonite biohorizon for the Upper Barremian of southeastern France. Didier Bert& Gérard Delanoy.- Research in the Feraudianus Subzone of the Sartousiana Zone of the Barremian stage led to the discovery of a new species of Pseudoshasticrioceras: P. bersaci nov. sp. Its study provides evidence concerning the developments of the latest Gassendiceratinae Bert et alii, 2006, and the relationship between the genus Pseudoshasticrioceras Delanoy, 1998, and Gassendiceras Bert et alii, 2006. In particular, this new species is derived from Pseudoshasticrioceras magnini (Delanoy, 1992) by a minor revision in the processes of ontogenesis (retardation of ornamentation - neoteny). However, the evolution towards Pseudoshasticrioceras autrani Delanoy, 1998, implies a"failure" in this process that may possibly be related to parallel changes in environmental conditions. On the other hand, the very closely defined stratigraphic position of Pseudoshasticrioceras bersaci nov. sp., and its position in the anagenetic lineage of Pseudoshasticrioceras, demonstrates its interest as a biostratigraphic marker: a new Bersaci Biohorizon is proposed; it is located between the Magnini and the Autrani biohorizons.- CG2009_A02.- Handle-ID: http://hdl.handle.net/2042/23733

· Les ostracodes de l'Albien-Turonien moyen de la rgion d'Antsiranana (Nord Madagascar) : systmatique, palocologie et palobiogographie. Jean-François Babinot, Jean-Paul Colin& Auran Randrianasolo.- Des associations d'ostracodes provenant de la région d'Antsiranana, ex Diego-Suarez, dans le N de Madagascar ontétéétudiées au niveau systématique. Dans l'intervalle Albien-Turonien moyen, 29 espèces appartenantà 21 genres ontété reconnues, 10 nouvelles espèces, un nouveau genre (Malagasyella) et un nouveau sous-genre (Hemiglenocythere) ontété créés. L'Albien ainsi que le Cénomanien inférieur se caractérisent par des associations bien différenciées. D'un point de vue paléoécologique, la succession des faunes d'ostracodes montre une baisse progressive du niveau de la mer d'un milieu de bassin-talusà l'Albienà un environnement de plate-forme externe au Turonien. Pendant cette période les faunes d'ostracodes de Madagascar montrent de fortes affinités avec celles de l'Inde (Rajasthan) ce qui mèneà proposer l'existence de province faunistique indo-malgache.- CG2009_A01.- Handle-ID: http://hdl.handle.net/2042/23730

· Nannofsiles del Serravalliano (Mioceno) en Patagonia, Argentina - Serravallian (Miocene) nannofossils in Patagonia, Argentina. Margarita Simeoni.- For the first time, nannofossils found in the marine stratigraphic unit named"Patagoniano" which crops out at Cerro Chenque and Cerro Hermitte in southeastern Chubut, Argentina, are documented. They were recovered from pelitic levels in the lower part of coarsening-upward siliciclastic sedimentary sequences. The nannofossils are assigned in part to the Discoaster kugleri Zone NN7 (Martini, 1971) and CN5b (Bukry, 1971, 1973) thus allowing correlation of the productive levels with the Serravallian Stage (upper Middle Miocene).- CG2009_L01.- Handle-ID: http://hdl.handle.net/2042/23731

· Mediterranean Neocomian belemnites, part 3: Valanginian-Hauterivian belemnites. Nico M.M. Janssen.- The classical papers of Raspail (1829, 1830) and Duval-Jouve (1841) described a wide range of belemnite species, mainly from the Lower Cretaceous of the Castellane-Peyroules area (Alpes de Haute-Provence, France). The present work focuses mainly on the biostratigraphy of these previously described belemnite taxa for their stratigraphic relationships had not been determined precisely. Here, biostratigraphy is related to the lithologic successions and faunal associations (ammonites) of various outcrops in the area studied. Complementary data were obtained from the La Lagne, Les Allaves and Pas d'Escale sections (Alpes de Haute-Provence, France). And, in order to attain a better understanding of the stratigraphic distribution of Late Valanginian belemnites in condensed glauconitic deposits, these assemblages are compared with belemnites from deeper water successions in the Angles, Source de l'Asse de Moriez, Cheiron areas and those in the vicinity of La Charce and Vergol that are even deeper.- CG2009_M01.- Handle-ID: http://hdl.handle.net/2042/23732

· Cenozoic Dasycladales. A photo-atlas of Lutetian species from French Cenozoic basins. Patrick Génot.- Dasycladales are unicellular green algae in existence since the Paleozoic era. Dasycladales discovered in the Cenozoic strata of the French sedimentary basins are noteworthy for the exceptional quality of their preservation. Although most fossil Dasycladales are known only in thin sections, the coatings of the Dasycladales in these basins, particularly of those in Lutetian beds, are easy to extract from sandy sediments and then are examined under the electron microscope. This method of investigation facilitates greatly the identification of the external and internal features of each species.- CG2009_SP01.- Handle-ID: http://hdl.handle.net/2042/21981

· Spirochetes and salt marsh microbial mat geochemistry: Implications for the fossil record. Elizabeth A. Stephens, Olivier Braissant& Pieter T. Visscher.- Microbial mats are synergistic microbial consortia through which major elements, including sulfur, are cycled due to microbial and geological processes. Depth profiles of pH, O2, sulfide, exopolymeric substances (EPS), and the rate of sulfate reduction were determined in an Oscillatoria sp. and Microcoleus-dominated marine microbial mat at the Great Sippewissett salt marsh, Massachusetts. In addition, measurements in spirochete enrichments and Spirochaetae litoralis cultures showed sulfide consumption during which polysulfides, thiosulfate, and presumably sulfate formed. These data suggest that spirochetes can play a role in the cycling of sulfur in these mats. The obligate to facultative anaerobic spirochetes may consume sulfide to remove oxygen. Furthermore, spirochetes may enhance preservation of microbial mats within the rock record by degrading EPS and producing low molecular weight organic compounds (LMWOC). Both sulfide oxidation (i.e., oxygen removal) and EPS degradation (i.e., production of LMW organic compounds) stimulate the activity of sulfate-reducing bacteria (SRB), which are responsible for the precipitation of calcium carbonate in most lithifying mats.- CG2008_A09.- Handle-ID: http://hdl.handle.net/2042/20045

· On the history of the names Lingula, anatina, and on the confusion of the forms assigned them among the Brachiopoda. Christian C. Emig.- The first descriptions of Lingula were made from then extant specimens by three famous French scientists: Bruguière, Cuvier, and Lamarck. The genus Lingula was created in 1791 (not 1797) by Bruguière and in 1801 Lamarck named the first species L. anatina, which was then studied by Cuvier (1802). In 1812 the first fossil lingulids were discovered in the Mesozoic and Palaeozoic strata of the U.K. and were referred to Lingula on the basis of similarity in the form of the shell. In the 1840's other linguliform brachiopods from the Palaeozoic were described. The similarity of the shell form of the extant Lingula and these fossils led Darwin in 1859 to create the description"living fossil" in his book"On the Origin of Species". Thereafter, this Darwinian concept became traditional in that Lingula was considered to lack morphological evolutionary changes. Although denounced as scientifically incorrect for more than two decades, the concept still remains in many books, publications and Web sites, perhaps a witness to palaeontological conservatism.- CG2008_A08.- Handle-ID: http://hdl.handle.net/2042/20044

· Les Phylloceratoidea (Ammonoidea) aptiens et albiens du bassin vocontien (Sud-Est de la France). Bernard Joly& Michel Delamette.- L'étude de plus de 2200 spécimens de Phylloceratoidea (Cephalopoda, Ammonoidea) récoltés dans les dépôts aptiens et albiens du bassin vocontien (Sud-Est de la France) a permis l'identification et la description de 28 taxons repérés stratigraphiquementà l'échelle de la zone d'ammonite. Quatre nouveaux taxons sont décrits : Phylloceras (Hypophylloceras) moriezense Sayn, 1920 tenuicostulata nov. subsp. (base de l'Aptien supérieur), Phylloceras (Goretophylloceras) vocontium nov. sp. (sommet de l'Aptien moyenà base de l'Albien inférieur), Salfeldiella (Gyrophyllites) falloti nov. sp. (sommet de l'Aptien inférieurà base de l'Aptien supérieur), Phyllopachyceras brehereti nov. sp. (base de l'Aptien moyenà base de l'Aptien supérieur).- CG2008_M04.- Handle-ID: http://hdl.handle.net/2042/19113

· Holostratigraphy of the Kahmah regional Series in Oman, Qatar, and the United Arab Emirates. Bruno Granier.- The stratigraphic framework of the uppermost Jurassic - Lower Cretaceous interval of the Gulf area is revised using both historical and recently acquired paleontological (ammonites, calpionellids, foraminifers,'calcareous' algae), sedimentological and sequential information. The Kahmah regional Series ranging in age from Late Tithonian to Gargasian (= middle Aptian) times is subdivided into regional stages, named from bottom to top: Rayda (with two substages, Bu Haseer and Belbazem), Salil, Zakum, Lekhwair, Kharaib, Hawar, and Shu'aiba. The Kahmah rests either on strata representing the Habshan regional Stage, which is the last term of the Sahtan regional Series (locally absent due to a stratigraphic hiatus in basinal areas), or on much older strata; it is followed either by the Bab regional Stage (locally absent due to a stratigraphic hiatus on platform areas), or by the Sabsab regional Substage (the lowermost part of the Nahr Umr regional Stage), both of which are assigned the Wasi'a regional Series. The Kahmah succession (as well as those of the Sahtan below and the Wasi'a above) is discontinuous, i.e. punctuated by sedimentary hiatuses due to forced regressions, some of significant importance (in the Zakum or in the Bab, and those bounding the Hawar and the Shu'aiba).- CG2008_A07.- Handle-ID: http://hdl.handle.net/2042/19112

· 12th Meeting of the International Nannoplankton Association (Lyon, September 7-10, 2008). Emanuela Mattioli, Silvia Gardin, Fabienne Giraud, Davide Olivero, Bernard Pittet& Stéphane Reboulet.- Guidebook for the post-congress fieldtrip in the Vocontian Basin, SE France (September 11-13, 2008).- CG2008_BOOK_01.- Handle-ID: http://hdl.handle.net/2042/18137

· About the stratigraphic position of the Lower Aptian Roloboceras hambrovi (Ammonoidea) level. Pierre Ropolo, Michel Moullade, Gabriel Conte& Guy Tronchetti.- In the stratotype of the Lower Aptian substage the position of the assemblage that includes Roloboceras spp. and Megatyloceras spp. has been clearly established as being in the middle part of the upper Bedoulian. Some authors have erected this horizon as a subzone, or even a zone, with R. hambrovi as species-index. In other areas (southern England, eastern Spain, the Ardèche in southeastern France), where taphonomic conditions are not always as favourable as they are in the stratotype, the level at which this assemblage occurs seems to be confined to the upper part of the lower Bedoulian. Various hypotheses are considered in an attempt to explain this divergence.- CG2008_L03.- Handle-ID: http://hdl.handle.net/2042/18124

· The Douvilleiceratidae (Ammonoidea) of the Lower Aptian historical stratotype area at Cassis-La Bdoule (SE France). Pierre Ropolo, Gabriel Conte, Michel Moullade, Guy Tronchetti& Roland Gonnet.- Recent biostratigraphic research in the marly limestones of the Cassis-La Bédoule area (SE France) provided a rich macrofauna of Douvilleiceratidae Parona& Bonarelli, 1897. From the uppermost Barremian (Pseudocrioceras waagenoides Subzone) to the middle Aptian (Parahoplites melchioris Zone), specimens of Procheloniceras, Cheloniceras, Roloboceras, Megatyloceras and Epicheloniceras were collected in succession. In this paper we describe the various genera and species from this material and delimit precisely their stratigraphic positions. Our study shows that each genus or subgenus characterizes a discrete stratigraphic interval. In addition, the Cheloniceras meyendorffi (upper Bedoulian), Epicheloniceras debile, Epicheloniceras gracile, and Epicheloniceras buxtorfi (Gargasian = middle Aptian) subzones, originally defined in England by Casey (1961a), are identified for the first time in the Lower Aptian stratotypic area of Cassis-La Bédoule.- CG2008_M03.- Handle-ID: http://hdl.handle.net/2042/18125

· Les dpts continentaux du Jurassique moyen au Crtac infrieur dans le Haut Atlas oriental (Maroc) : paloenvironnements successifs et signification palogographique. Hamid Haddoumi, André Charrière, Bernard Andreu& Pierre-Olivier Mojon.- Dans le Haut Atlas oriental marocain, les"Couches rouges" continentales succédant aux dernières formations marines jurassiques sont organisées en trois grands ensembles lithostratigraphiques : la Formation d'Anoual, la Formation de Ksar Metlili et le Groupe de Dekkar, séparés par deux importantes ruptures de l'enregistrement sédimentaire. La Formation d'Anoual correspondà des dépôts de plaine deltaïqueà dominante fluviatile, suivis d'une ultime incursion marine d'âge Bathonien inférieur. La Formation de Ksar Metlili est uniquement localisée dans certaines aires subsidentes et représente un deuxième cycle fluvio-deltaïque avec des charophytes d'âge Tithonien terminal-Berriasien inférieur. Le Groupe de Dekkar traduit l'installation d'une nouvelle aire de sédimentation recouvrant l'ensemble de la région avec trois environnements successifs : cônes alluviaux associésà une sédimentation lacustre du Barrémien?-Aptienà charophytes et ostracodes, puis dépôts de plaines alluviales, enfin plaines et lagunes côtières au Cénomanien. Les"Couches rouges" continentales du domaine atlasique oriental correspondent ainsià l'enregistrement sédimentaire de troisévénements géodynamiques distincts :• une phase de comblement du sillon atlasique, associéeà une forte subsidence dénotant une poursuite du rifting atlasique au Bathonien inférieur ;• une période d'émersion généralement marquée par une lacune du Bathonien au Barrémien-Aptien, mais au cours de laquelle subsiste une sédimentation résiduelle dans certaines cuvettes intra-continentalesà la limite Jurassique/Crétacé ;• une phase d'ouverture générant au Barrémien?-Aptien de nouveaux bassins continentaux quiévoluent vers des conditions marines jusqu'à la transgression du Cénomanien-Turonien. La comparaison de cet enchaînement avec celui enregistré dans d'autres secteurs du domaine atlasique permet de retracer les trois phases de l'évolution paléogéographique de ces segments sud-téthysiens entre le Jurassique moyen et le Crétacé supérieur.- CG2008_A06.- Handle-ID: http://hdl.handle.net/2042/18122

· Zonation by ammonites and foraminifers of the Vraconnian-Turonian interval: A comparison of the Boreal and Tethyan domains (NW Europe / Central Tunisia). Amédro Francis& Robaszynski, Francis.- Since the end of the 19th century the interval comprising the uppermost Upper Albian, the Cenomamian, the Turonian and the basal Coniacian has been subdivided, first into ammonite zones, then, beginning in the middle of the 20th century, into zones of planktonic foraminifera. These two groups, one macrofossil, the other microfossil, are particularly effective for bio-chronostratigraphy thanks to their rapid rates of evolution. But differences in the faunal makeup between the Boreal domain (northwestern Europe) and the Tethyan domain (Mediterranean) have for a long time hindered precise correlation of the two domains. (...) CG2008_L02 Handle-ID: http://hdl.handle.net/2042/17066

· Zones d'ammonites et de foraminifres du Vraconnien au Turonien : Une comparaison entre les domaines boral et tthysien (NW Europe / Tunisie centrale). Amédro Francis& Robaszynski, Francis.- Depuis la fin du 19ème siècle, l'intervalle comprenant l'Albien supérieurélevé, le Cénomanien, le Turonien et le Coniacien basal aété subdivisé d'abord en zones d'ammonites puis,à partir du milieu du 20ème siècle, en zones de foraminifères planctoniques, deux groupes de macro- et de microfossiles particulièrement efficaces en bio-chronostratigraphie grâceà leur taux d'évolution rapide. Toutefois, des différences de compositions fauniques entre le domaine boréal (Europe du Nord-Ouest) et le domaine téthysien (Méditerranée) ont longtemps empêché des corrélations précises entre ces deux domaines. (...) CG2008_L02-fr Handle-ID: http://hdl.handle.net/2042/17065

· Support for a Vraconnian Stage between the Albian sensu stricto and the Cenomanian (Cretaceous System). Amédro, Francis.- The geological scale for the middle Cretaceous currently used throughout the world was proposed by Alcide d'Orbigny in the XIXth century between the years 1842 and 1847 and establishes the succession of stages as Albian, Cenomanian and Turonian. In 1868 Renevier proposed that a supplemental chronostratigraphic division be intercalated between the Albian and the Cenomanian: the Vraconnian stage. This term was not generally accepted and after a period when it was referred to by Breistroffer (1936) as a substage constituting the upper part of the Albian, as an equivalent of the Stoliczkaia dispar ammonite Zone, its abandonment was"recommended" by the Conference on the Lower Cretaceous held in Lyon in 1963. The conditions that led to this"decision" will be discussed herein. (...) CG2008_M02 Handle-ID: http://hdl.handle.net/2042/17063

· Les Pseudoperisphinctinae (Ammonitina, Perisphinctidae) de l'horizon Leckenbyi (Callovien suprieur, zone Athleta) de Montreuil-Bellay (Maine-et-Loire, France) et description d'une nouvelle espce, Choffatia isabellae. Bonnot Alain, Boursicot Pierre-Yves, Ferchaud Patrice& Marchand Didier.- Dans la région de Montreuil-Bellay (Maine-et-Loire), de nombreuses coupes ontété réalisées au passage Callovien moyen-Callovien supérieur. Le premier banc attribué au Callovien supérieur aété daté de l'horizonà Leckenbyi. Il a fourni une très importante faune ammonitique (N=3125), dans laquelle les Perisphinctidae représentent 51% de l'effectif.À côté de formes plus ou moins bien connues comme Pseudopeltoceras leckenbyi (Bean), Orionoides pseudorion (Waagen), Subgrossouvria famulum (Bean) et S. crassa Gérard et Contaut, on trouve une espèce qui n'a jamaisété ni décrite ni figurée : cette espèce fait l'objet du présent article. (...) CG2008_A05 Handle-ID: http://hdl.handle.net/2042/16929

· Description et illustration de quarante-quatre gilianelles (microproblematica) et de dix autres microproblematica du Crtac de la coupe stratotypique de Tercis (limite Campanien-Maastrichtien), Sud-Ouest France. Odin Gilles Serge.- L'étude des microfossiles extraits par acétolyse des niveaux carbonatés indurés de la série campano-maastrichtienne du stratotype de limiteà Tercis (Landes, France) a permis de découvrir 44 taxons attribués au groupe des gilianelles (microproblematica appartenant probablement aux Protistes, Protozoaires, Rhizopodes) ainsi que dix autres microproblematica. 281 vues au microscopeélectronique et 183 vues au microscope optique permettent d'illustrer, chez les gilianelles, 36 espèces, et 8 sous-espèces appartenantà 15 genres dont 14 nouveaux. Les nouveaux genres sont : Tercensella, Azymella, Numismella, Aturella, Scutellella, Corniculum, Caccabella, Orculiella, Pennigerella, Corbella Aquilegiella, Pocillella, Coraliella, Obbella. Chez les autres microproblematica, neuf espèces et une sous-espèce sont proposées appartenantà sept genres nouveaux : Globulella, Piperella, Vasculum, Lucernellus, Cimicellus, Tubella, Pilella. (...) CG2008_M01 Handle-ID: http://hdl.handle.net/2042/14858

· Diagenetic rejuvenation of raised coral reefs and precision of dating. The contribution of the Red Sea reefs to the question of reliability of the Uranium-series datings of middle to late Pleistocene key reef-terraces of the world. Plaziat Jean-Claude, Reyss Jean-Louis, Choukri Abdelmajid& Cazala Charlotte.- This paper is a general review of the dating of reefs on the coasts of the Red Sea, including those of Egypt, Jordan, Sudan, Eritrea, Saudi Arabia and Djibouti. New methods of sampling and dating (U/Th) already tested on the reefs and associate deposits of the African coast of Egypt have demonstrated that processes of rejuvenation shown to exist in the best-preserved corals are probably attributable to the diagenesis of the organic material in their bio-minerals, thus justifying a revision of a great many datings of corals supposedly younger or older than the age assigned to the high-level isotopic substage (Δ18O) MIS 5.5 (= 5e). During this late Pleistocene substage, a rapid lowering of sea level, short and limited to about ten meters, was detected and associated with a glacio-eustatic episode of global influence. (...) CG2008_A04 Handle-ID: http://hdl.handle.net/2042/16743

· Nouveaux biohorizons et propositions pour le dcoupage biozonal ammonitique du Barrmien suprieur du Sud-Est de la France. Bert Didier, Delanoy Gérard& Bersac Stéphane.- Un nouveau découpage biozonal ammonitique du Barrémien supérieur du Sud-Est de la France est proposé. Il tient compte des renouvellements fauniques, des données séquentielles ainsi que des données historiques. Il est enrichi de quatre biohorizons nouveaux. Le Barrémien supérieur comporteà présent les trois biozones (anciennement six)à Vandenheckei, Sartousiana et Giraudi. La première contient les trois sous-zonesà Uhligi, dont le statut est discuté, Sayni et Barremense, ainsi que les deux nouveaux biohorizonsà Marchandi et Breistrofferi (sommet de la Sous-Zoneà Barremense). La Biozoneà Sartousiana admet les sous-zonesà Limentinus, Provincialis et Feraudianus. (...) CG2008_A03 Handle-ID: http://hdl.handle.net/2042/16737

· Characterisation of the organic matter of upper Bedoulian and lower Gargasian strata in the historical stratotypes (Apt and Cassis-la-Bdoule areas, SE France). Baudin François, Moullade Michel& Tronchetti Guy.- The Total Organic Carbon (TOC) content of the Gargasian strata studied in their historical stratotype area is rather low (0.3% on average). Only a few levels show TOC values approaching 1.2%. This small amount of preserved organic matter, associated with low hydrogen index values (10 to 115 mg hydrocarbons/g TOC), argues for deposition in fully oxic conditions. This organic content is a mixture of land-derived organic particles and deeply oxidised marine organic matter. The organic flux was strongly diluted by the autochthonous carbonate input. (...) CG2008_L01 Handle-ID: http://hdl.handle.net/2042/14860

· New micropalaeontological studies on the type section of the Campanian-Maastrichtian at Tercis (SW France): new ostracodes obtained using acetolysis. Andreu Bernard& Odin Gilles Serge.- Through the use of acetolysis new micropalaeontological studies on the type section of the Campanian-Maastrichtian boundary at Tercis (SW France) we obtained additional information on ostracodes. Acetolysis on hard carbonates levels of the Tercis quarry found 22 species in addition to those of the studies published in 2001. Today, 75 species are recognized: they represent 34 known genera, and 4 currently unidentified. Small species usually rare of the genera Aversovalva, Bythoceratina and Eucytherura were collected. (...) CG2008_A02 Handle-ID: http://hdl.handle.net/2042/14857

· Nouvellestudes micropalontologiques sur le stratotype de la limite Campanien-Maastrichtien Tercis (SO France) : complments sur les ostracodes extraits par actolyse. Andreu Bernard& Odin Gilles Serge.- Une nouvelleétude de la microfaune, obtenue par acétolyse des niveaux indurés dans le Campanien-Maastrichtien de la carrière de Tercis, a permis de récolter 22 espèces additionnelles au regard de l'étude publiée en 2001 et de porter ainsià 75 espèces, réparties sur 34 genres reconnus et 4 indéterminés, la biodiversité en ostracodes de ce site. Des espèces de petite taille, généralement rares, rapportées aux genres Aversovalva, Bythoceratina et Eucytherura ont par ailleursété recueillies. (...) CG2008_A02(fr) Handle-ID: http://hdl.handle.net/2042/14858

· Planktonic and benthic foraminiferal assemblages and biostratigraphy of the uppermost Bedoulian and lower Gargasian of La Tuilire - St-Saturnin-ls-Apt (area of the Aptian stratotype, Vaucluse, SE France). Moullade Michel, Tronchetti Guy& Bellier Jean-Pierre.- Faisant suite aux recherches sur le Bédoulien et le Gargasien du secteur de Cassis-La Bédoule (B. du Rh., SE France), l'étude de quatre coupes en relais dans l'aire stratotypique de l'Aptien, situées dans le secteur du Hameau de la Tuilière (commune de Saint-Saturnin-lès-Apt, Vaucluse, SE France) a permis l'analyse détaillée des associations de foraminifères benthiques (30 taxons) et planctoniques (15 taxons) du Bédoulien supérieur et du Gargasien inférieur. Descriptions, figurations et répartition stratigraphique sont fournies pour les formes les plus significatives, avec individualisation de plusieurs marqueurs, benthiques et surtout planctoniques. (...) CG2008_A01 Handle-ID: http://hdl.handle.net/2042/14699

· Facies development during late Early-Middle Cambrian (Tayan Member, Burj Formation) transgression in the Dead Sea Rift valley, Jordan. Elicki, Olaf.- The transgressive Tayan Member of the upper Lower to Middle Cambrian Burj Formation (Jordan) has been investigated in several localities of the Dead Sea Rift valley, Jordan. The lower portion of this member consists of low-energy siliciclastics with indications of temporary, early pedogenetic processes, pointing to some stagnation during transgression. The upper portion of the member was deposited under higher energy conditions. Stromatolites, desiccation cracks, halite-pseudomorphs, laminated dolostones, and tepees, together with ripples, mud-clasts and scours point to a shallow intertidal to supratidal sabkha-related environment in a climate of tropical to subtropical aridity. (...) CG2007_A07 Handle-ID: http://hdl.handle.net/2042/9717

· Revision of the foraminiferal genus Globoreticulina Rahaghi, 1978, and of its associated fauna of larger foraminifera from the late Middle Eocene of Iran. Hottinger, Lukas.- The definition of the type species of the genus Globoreticulina Rahaghi, 1978, G. iranica Rahaghi, 1978, is emended and its age discussed in relation to those of 17 associated taxa of larger foraminifera, all from restricted shallow environments. These taxa represent porcelaneous groups of spiroline habit including Rhabdorites malatyaensis, archaiasines (Archaias operculiniformis and A. diyarbakirensis), agglutinated conicals (Coskinolina and Dictyoconus) and some rotaliids (Medocia and others). (...) CG2007_A06 Handle-ID: http://hdl.handle.net/2042/9213

· The upper Bedoulian and lower Gargasian Ostracoda of the Aptian stratotype: Taxonomy and biostratigraphic correlation. Babinot, Jean-François; Moullade, Michel; Tronchetti, Guy.- In the vicinity of Saint-Saturnin-lès-Apt (Vaucluse, SE France), which is included in the area of the historic Aptian stratotype of Apt-Gargas, are four sections in a succession that permits the study in a very detailed and continuous way of the last beds of the upper Bedoulian and those of the lower Gargasian. (...) CG2007_A05 Handle-ID: http://hdl.handle.net/2042/8877

· Morphological variability of Globorotalia menardii (planktonic foraminifera) in two DSDP cores from the Caribbean Sea and the Eastern Equatorial Pacific. Knappertsbusch, Michael.- Variability in the test of Globorotalia menardii during the past 8 million years has been investigated at DSDP Site 502A (Caribbean Sea) and DSDP Site 503A (Eastern Equatorial Pacific). (...)

· Fluctuations of sea-water chemistry during Gargasian (Middle Aptian) time. Data from trace-element content (Mg, Sr, Mn, Fe) in hemipelagic carbonates from La Marcouline Quarry (Cassis, SE France). Renard, Maurice; Rafélis, Marc de; Emmanuel, Laurent; Beltran, Catherine; Moullade, Michel; Tronchetti, Guy.- In the Lower Aptian historical stratotype area (Cassis-La Bédoule, SE France), a geochemical study of the Gargasian (Middle Aptian) marl-limestone alternations of the La Marcouline quarry complements data already obtained from Bedoulian (Early Aptian) sediments there. (...) CG2007_A03 Handle-ID: http://hdl.handle.net/2042/8454

· The Gargasian (Middle Aptian) of La Marcouline section at Cassis-La Bdoule (SE France): Stable isotope record and orbital cyclicity. Kuhnt, Wolfgang; Moullade, Michel.- Bulk rock stable isotope analysis of La Marcouline section (Cassis-La Bédoule area, SE France) revealed a general trend of decreasingδ13C andδ18O values from the bottom to the top of the section. The decrease inδ13C values reflects a global trend in Middle Aptian times, namely a return to pre-excursion values ofδ13C values following a major, positive excursion in the Early Aptian, which is a reflection of the Oceanic Anoxic Event (OAE) 1a. (...) CG2007_A02 Handle-ID: http://hdl.handle.net/2042/8044

· Relations between the northern and southern margins of the Tethys ocean during the Cretaceous period. Bulot, Luc G.; Ferry, Serge; Grosheny, Danièle (eds.).- A set of 11 abstracts and short papers (extended abstracts) of presentations given during a meeting organized by the"Groupe Français du Crétacé", held on November 27-28, 2006 at theÉcole des Mines de Paris. (...) CG2007_M02 Handle-ID: http://hdl.handle.net/2042/8029

· Parsimony analysis of endemicity of enchodontoid fishes from the Cenomanian. Silva, Hilda Maria Andrade da; Gallo, Valéria.- Parsimony analysis of endemicity was applied to analyze the distribution of enchodontoid fishes occurring strictly in the Cenomanian. The analysis was carried out using the computer program PAUP* 4.0b10, based on a data matrix built with 17 taxa and 12 areas. The rooting was made on an hypothetical all-zero outgroup. (...) CG2007_L01 Handle-ID: http://hdl.handle.net/2042/7146

· Recent advances in palynology. Steemans, Philippe; Javaux, Emmanuelle (eds.).- A set of 11 abstracts and short papers (extended abstracts) of presentations given during a meeting organized by the NFSR Working Group,"Micropaléontologie végétale et Palynologie (MVP)", held May 24, 2006 at the University of Liège, Belgium. (...) CG2007_M01 Handle-ID: http://hdl.handle.net/2042/7042

· Environmental changes during marl-limestone formation: evidence from the Gargasian (Middle Aptian) of La Marcouline Quarry (Cassis, SE France). Beltran, Catherine; Rafélis, Marc de; Renard, Maurice; Moullade, Michel; Tronchetti, Guy.- Limestone-marl alternations are usually interpreted to reflect cyclic paleoenvironmental fluctuations linked to Milankovitch-scale climate variations. However, the impact of diagenesis on lithological differentiation can be overprinted on the primary signal. (...) CG2007_A01 Handle-ID: http://hdl.handle.net/2042/6828

· Nouvellestudes micropalontologiques sur le stratotype de la limite Campanien-Maastrichtien Tercis (SO France) : les gilianelles (microproblematica) extraites par actolyse. Odin, Gilles Serge; Lethiers, Alexandre.- New micropalaeontological studies on the stratotype of the Campanian-Maastrichtian boundary at Tercis (SW France): the gilianelles (microproblematica) extracted through acetolysis. (...) CG2006_A05 Handle-ID: http://hdl.handle.net/2042/6697

· Les algues vertes (phylum Viridiplantae), sont-elles vieilles de deux milliards d'annes ?. Teyssèdre, Bernard.- L'ouvrage présenté ici a pour base un différend qui oppose l'auteurà Andrew Knoll, qui situe l'apparition des algues vertes vers 750 Ma. Bernard Teyssèdre analyse ce probléme par les méthodes qu'il préconisait dans"La vie invisible" combinantà la palèontologie descriptive traditionnelle, les analyses ultrastructurales et biochimiques et confrontant ces résultats avec ceux de la phylogénie moléculaire. Manié avec discernement et compétence, cet outil ne permet certes pas d'établir une taxinomie exacte, mais d'écarter les taxinomies erronées basées sur des convergences et de déterminer la succession des points nodaux dans l'évolution d'une lignée. (...) CG2006_B01 Handle-ID: http://hdl.handle.net/2042/5845

· Schmidtites celatus (Obolida, Brachiopoda) from the"Obolus sands" (Upper Cambrian - Lower Ordovician) of Estonia. Emig, Christian C.- Large collections of the brachiopod obolid Schmidtites celatus have been gathered from Upper Cambrian-Lower Ordovician strata in four northern Estonian localities. The morphological features and the taxonomic characters of the genus and of the single species representing it are re-described and illustrated. (...) CG2006_A04 Handle-ID: http://hdl.handle.net/2042/5837

· Are the green algae (phylum Viridiplantae) two billion years old?. Teyssèdre, Bernard.- In his book, Life on a young planet, A.H. Knoll states that the first documented fossils of green algae date back 750 Ma. However, according to B. Teyssèdre's book, La vie invisible, they are much older. Using a method which combines paleontology and molecular phylogeny, this paper is an inquiry into the Precambrian fossils of some"acritarchs" and of a primitive clade of green algae, the Pyramimonadales. (...) CG2006_A03 Handle-ID: http://hdl.handle.net/2042/5836

· Illustrated glossary of terms used in foraminiferal research. Hottinger, Lukas.- An illustrated glossary of terms used in the analysis of the shells of recent and fossil foraminifera supplemented by a rigorous selection of terms that facilitate an understanding of their biology and their use in ecology and biostratigraphy. The glossary includes some 650 entries illustrated by 83 - often composite - figures many of which are stereographs or 3D models. A taxonomic index lists the 140 taxa illustrated. CG2006_M02 Handle-ID: http://hdl.handle.net/2042/5832

· Photo-Atlas of living Dasycladales. Berger, Sigrid.- Dasycladales, from whichever point of view they are observed, biological or paleontological, never lack in surprises for their elegant structural simplicity is associated with an extraordinary morphological plasticity. This is why their study is so exciting and compelling for those who have a regard for these algae. (...) CG2006_B02 Handle-ID: http://hdl.handle.net/2042/5831

· The Deshayesitidae Stoyanov, 1949 (Ammonoidea) of the Aptian historical stratotype region at Cassis-La Bdoule (SE France). Ropolo, Pierre; Moullade, Michel; Gonnet, Roland; Conte, Gabriel; Tronchetti, Guy.- One of the significant results of the multidisciplinary investigations carried out during recent years in the Lower Aptian historical stratotype of the Cassis-La Bédoule region (South-Eastern France) was a proposal to update the local Upper Barremian/Lower Aptian ammonite biozonation in order to be more consistent with the standard Mediterranean zonal subdivisions. (...) CG2006_M01 Handle-ID: http://hdl.handle.net/2042/4744

· Ankylosaurid (Dinosauria: Thyreophora) osteoderms from the Upper Cretaceous Cerro del Pueblo Formation of Coahuila, Mexico. Rivera-Sylva, Héctor E.; Espinosa-Chávez, Belinda.- Ankylosaurian dinosaur osteoderms have been discovered in the southeastern part of the State of Coahuila, Mexico, in the township of General Cepeda, in the locality known as El Palmar. (...) CG2006_L02 Handle-ID: http://hdl.handle.net/2042/4741

· Decastronema kotori comb. nov.: a mat-forming cyanobacterium on Cretaceous carbonate platforms and its modern counterparts. Golubic, Stjepko; Radoičić, Rajka; Seong-Joo, Lee.- Decastronema kotori was first described in 1959 as Aeolisaccus kotori Radoičić, a new species of a problematic fossil worm, Aeolisaccus Elliott. In 1975 De Castro recognized the true identity of this microbial fossil: a cyanobacterium related closely to the modern genus Scytonema. (...) CG2006_A02 Handle-ID: http://hdl.handle.net/2042/4674

· Microbiofacies analysis of Cambrian offshore carbonates from Sardinia (Italy): environment reconstruction and development of a drowning carbonate platform. Elicki, Olaf.- The Campo Pisano Formation of southwestern Sardinia is represented by an offshore carbonate succession spanning the latest Early to late Middle Cambrian. Paleogeographically, the fauna is characteristic of western Perigondwana, and indicates faunal relations to France, Spain, and Turkey. Microfaunal paleoecology reflects drowning of an isolated carbonate platform at tropical latitudes. (...) CG2006_A01 Handle-ID: http://hdl.handle.net/2042/4567

· The Gargasian (Middle Aptian) of La Tuilire - St-Saturnin-ls-Apt (area of the Aptian historical stratotype, Vaucluse, SE France): geographic setting and outcrop correlation. Moullade, Michel; Tronchetti, Guy; Balme, Christine; Kouyoumontzakis, Georges.- A stratonomic and micropaleontological analysis of the Aptian marls cropping out in the La Tuilière area near Saint-Saturnin-lès-Apt (Vaucluse, SE France), enabled us to reconstitute a continuous succession almost 120 m thick, that includes the upper terms of the Lower Aptian (Bedoulian) and the lower part of the Middle Aptian (Gargasian). (...) CG2006_L01 Handle-ID: http://hdl.handle.net/2042/4564

· Pre-Cambrian to Palaeozoic Palaeopalynology and Palaeobotany. Steemans, Philippe; Javaux, Emmanuelle (eds.).- A set of 14 abstracts and short papers (extended abstracts) of presentations given during a meeting organized by the NFSR Working Group,"Micropaléontologie végétale et Palynologie (MVP)", held May 11, 2005 at the University of Liège, Belgium. (...) CG2005_M02 Handle-ID: http://hdl.handle.net/2042/4353

· Early Aptian?C and manganese anomalies from the historical Cassis-La Bdoule stratotype sections (S.E. France): relationship with a methane hydrate dissociation event and stratigraphic implications. Renard, Maurice; Rafélis, Marc de; Emmanuel, Laurent; Moullade, Michel; Masse, Jean-Pierre; Kuhnt, Wolfgang; Bergen, Jim A.; Tronchetti, Guy.- Comparison of oxygen and carbon isotope and manganese evolution curves in bulk carbonate from the historical Bedoulian stratotype (Cassis-La Bédoule area, Provence, France) reveals an important geochemical event (negativeδ¹³C and high Mn content) located within the D. deshayesi ammonite Zone and at the base of the R. hambrowi ammonite Subzone. (...) CG2005_A04 Handle-ID: http://hdl.handle.net/2042/3229

· The distribution of worm borings in brachiopod shells from the Caradoc Oil Shale of Estonia. Vinn, Olev.- Abundant worm borings were found in some brachiopod shells (Clitambonites, Estlandia, Nicolella) from the Ordovician (Caradoc) oil shale in North Estonia. 9 of 21 brachiopod genera (43%) have been bored. Excluding the size and thickness of valves, no common morphological feature discriminates the brachiopods with borings from those without them. (...) CG2005_A03 Handle-ID: http://hdl.handle.net/2042/2454

· The"sauropod" from the Albian of Mesnil-Saint-Pre (Aube, France): a pliosaur, not a dinosaur. Buffetaut, Eric; Colleté, Claude; Dubus, Bruno; Petit, Jean-Louis.- A vertebra from the Albian of Mesnil-Saint-Père (Aube, eastern Paris Basin), previously identified as the first caudal of a sauropod dinosaur, is shown to be a dorsal vertebra of a large pliosaur. The specimen resembles vertebrae from the Albian of England and eastern France that have been referred to the pliosaur Polyptychodon, a taxon in need of revision. (...) CG2005_L01 Handle-ID: http://hdl.handle.net/2042/2380

· Discoaster zonation of the Miocene of the Kutei Basin, East Kalimantan, Indonesia (Mahakam Delta Offshore). Lambert, Bernard; Laporte-Galaa, Cécile.- Thirteen time-stratigraphic associations of the nannofossil Discoaster have been defined and used in the Miocene Kutei Basin of eastern Borneo to establish a regional stratigraphic framework. The methodology used is discussed and the fossils employed are figured and annotated. Their aid in resolving the timing, stages and details of delta construction is presented graphically. CG2005_M01 Handle-ID: http://hdl.handle.net/2042/1461

· The Gargasian (Middle Aptian) strata from Cassis-La Bdoule (Lower Aptian historical stratotype, SE France): planktonic and benthic foraminiferal assemblages and biostratigraphy. Moullade, Michel; Tronchetti, Guy; Bellier, Jean-Pierre.- This paper presents a thorough analysis of foraminiferal assemblages ranging in age from the Bedoulian-Gargasian transition to the middle Gargasian in the Cassis-La Bédoule area (SE France), the historical stratotype of the Lower Aptian substage. (...) CG2005_A02 Handle-ID: http://hdl.handle.net/2042/1460

· The modern environments of Molluscs in southern Mesopotamia, Iraq: A guide to paleogeographical reconstructions of Quaternary fluvial, palustrine and marine deposits. Plaziat, Jean-Claude; Younis, Woujdan R.- The Quaternary, mainly freshwater sediments of the Lower Mesopotamian plain include a thin transgressive marine unit which extends inland some 250 km from the present coastline, the Hammar Formation. (...) CG2005_A01 Handle-ID: http://hdl.handle.net/2042/1453

· Stage boundaries, global stratigraphy, and the time scale: towards a simplification. Odin, Gilles Serge; Gardin, Silvia; Robaszynski, Francis; Thierry, Jacques.- This paper examines four facets of stratigraphic terminology and usage considered faulty and proposes corrective measures. The four perfectible areas are (...) CG2004_A02 Handle-ID: http://hdl.handle.net/2042/290

· On a Deinotherium (Proboscidea) finding in the Neogene of Crete. Athanassiou, Athanassios.- This paper reports the discovery of an incomplete proboscidean mandible near the village of Maroniá in eastern Crete. The fragment described here includes the first molar (m1) of a deinothere, (...) CG2004_L05 Handle-ID: http://hdl.handle.net/2042/311

· New data on the lophophore anatomy of Early Cambrian linguloids from the Chengjiang Lagersttte, Southwest China. Zhang, Zhi-Fei; Shu, De-Gan; Han, Jian; Liu, Jian-Ni.- A succession of developmental types in the lophophores of lingulid brachiopods is reported from the Early Cambrian Chengjiang deposits of South China. These types range from trocholophe, schizolophe to simple coiled spirolophe. (...) CG2004_L04 Handle-ID: http://hdl.handle.net/2042/310

· Laboratory cultures of calcifying biomicrospheres generate ooids - A contribution to the origin of oolites. Brehm, Ulrike; Palinska, Katarzyna A.; Krumbein, Wolfgang E.- The in vitro production of ooid-like structures as possible precursors of oolites has been observed in laboratory cultures of spherical microbial communities isolated from the Wadden Sea (North Sea) (...) CG2004_L03 Handle-ID: http://hdl.handle.net/2042/309

· The Mediterranean deep-sea fauna: historical evolution, bathymetric variations and geographical changes. Emig, Christian C.; Geistdoerfer, Patrick.- The deep-water fauna of the Mediterranean is characterized by an absence of distinctive characteristics and by a relative impoverishment. Both are a result of events after the Messinian salinity crisis (Late Miocene) (...) CG2004_A01 Handle-ID: http://hdl.handle.net/2042/3230

· The Gargasian (Middle Aptian) of Cassis-La Bdoule (Lower Aptian historical stratotype, SE France): geographic location and lithostratigraphic correlations. Moullade, Michel; Tronchetti, Guy; Kuhnt, Wolfgang; Renard, Maurice, Bellier, Jean-Pierre.- In the middle of the last century Gargasian strata overlying the historical stratotypic beds of the lower substage of the Aptian (Bedoulian) were still well exposed in a number of quarries that extended in a NNE-SSW trending belt from the village of Roquefort-la Bédoule to the vicinity of the Cassis railway station (...) CG2004_L02 Handle-ID: http://hdl.handle.net/2042/307

· The Gargasian (Middle Aptian) substage in the Aptian historical stratotypes (SE France): General introduction. Moullade, Michel; Tronchetti, Guy.- In 1998 a double volume of the Journal"Géologie Méditerranéenne" (t. XXV, N° 3-4) was devoted to a detailed inventory of the Lower Aptian (Bedoulian substage) historical stratotype located in the vicinity of Cassis and Roquefort-La Bédoule, near Marseille (Bouches-du-Rhône, SE France) (...) CG2004_L01 Handle-ID: http://hdl.handle.net/2042/306

· Note on magnesite formation (Studies on irreversible geochemical reactions N 9). Deelmann, John C.- In recent laboratory experiments magnesite (MgCO3) has been synthesized at a temperature of 313°K (= 40°C). The experiments have demonstrated that irreversible reactions are involved in the low-temperature formation of magnesite. Fundamental to such irreversible reactions is a requirement for fluctuations, i.e., alternations between precipitation and dissolution. But unequivocal evidence for the necessity for fluctuations in order to produce such irreversible geochemical reactions can be demonstrated only by static control experiments. (...) CG2003_L03 Handle-ID: http://hdl.handle.net/2042/305

· Pristiograptus (Graptoloidea) from the perneri - lundgreni biozones (Silurian) of Lithuania. Radzevičius, Sigitas.- In recent laboratory experiments magnesite (MgCO3) has been synthesized at a temperature of 313°K (= 40°C). Two new forms of Pristiograptus dubius, here designated as varieties"A" and"B", are described and figured. Both were found in core samples representing the perneri through lundgreni biozones of the Wenlock epoch. The cores are from boreholesŠiupyliai-69, Parovėja-9, Likėnai-396, Paežeriai-222 and Sutkai-87 in central and northern Lithuania. The associated graptolites Cyrtograptus perneri Bouček, C. radians Törnquist, C. lundgreni Tullberg, Monograptus flemingii flemingii (Salter), M. testis testis (Barrande), Monoclimacis flumendosae (Gortani) and Pristiograptus pseudodubius (Bouček) (= P. parvus) are all indicative of the perneri, radians and lundgreni biozones of the Wenlock. (...) CG2003_A07 Handle-ID: http://hdl.handle.net/2042/300

· Reply to L.E. Popov and L.E. Holmer (CG2003_A06_LEP-LEH): Obolid taxonomy. Emig, Christian C.- Since early in the 19th Century the taxonomy of fossil obolids has been the subject of numerous controversies (...), so the development of new criteria for their proper differentiation is mandatory. Based on the extant species of the family Lingulidae (...) and later applied to fossil taxa (...), new morpho-anatomical characters were established and their variability analysed. (...) CG2003_A06R Handle-ID: http://hdl.handle.net/2042/299

· Understanding linguloid brachiopods: Obolus and Ungula as examples. Popov, Leonid E.; Holmer, Lars E.- Emig (...) re-examined the taxonomy of the genus Obolus Eichwald from the Middle Cambrian - earliest Ordovician of the East Baltic region as part of a proposal for a wholesale revision of the principles of linguloid systematics. He contended that previous taxonomic studies on Obolus and related forms were carried out erroneously using characters that have no taxonomic value. Emig's proposed revision is based mainly on the limited morphological diversity between fossil and Recent taxa within a single linguloid Family, the Lingulidae. (...) CG2003_A06 Handle-ID: http://hdl.handle.net/2042/298

· New insight on the stratigraphy of the"Upper Thamama" in offshore Abu Dhabi (U.A.E.). Granier, Bruno; Al Suwaidi, Ahmed Saqer; Busnardo, Robert; Aziz, Sabah K.; Schroeder, Rolf.- An integrated case study of field"A" in offshore Abu Dhabi found that the stratigraphic framework for the uppermost part of the so-called"Thamama Group" required revision. Detailed sedimentological work permitted a subdivision of the succession into lithostratigraphic units (more accurately"allostratigraphic units") and the fossil content permitted their allocation to standard age-related units ranging from Late Barremian through Middle Aptian times. (...) CG2003_A05 Handle-ID: http://hdl.handle.net/2042/297

· A new approach in rock-typing, documented by a case study of layer-cake reservoirs in field"A", offshore Abu Dhabi (U.A.E.). Granier, Bruno.- In carbonate reservoirs, the relationship between porosityØ, a measure of the combined volumes of several kinds of pore space (e.g. interparticle and separate-vug), and permeability K are neither linear nor logarithmic, hence only weakly correlatable. Approaches to an estimation of permeability that employ both petrographical and petrophysical parameters, the so-called rock-typing techniques, have proven to be the most nearly precise. However in many studies simple K/Ø cross-plots are used for each rock-type to provide trendlines from which K values are derived as a function ofØ values; this is common practice even though the coefficient of correlation r² departs significantly from 1. (...) CG2003_A04 Handle-ID: http://hdl.handle.net/2042/296

· Lower sea levels in the Middle Cenomanian. Hancock, Jake M.- It has been known since the 1970's that the relatively high sea levels during the Cenomanian in southern England and northern France were interrupted by a strong fall in sea level early in the Middle Cenomanian. This was a eustatic trough whose effects can be found not only in north-west Europe, but also from western Kazakhstan in central Asia to Texas, Colorado and South Dakota in the U.S.A. CG2003_L02 Handle-ID: http://hdl.handle.net/2042/304

· Proof that Lingula (Brachiopoda) is not a living-fossil, and emended diagnoses of the Family Lingulidae. Emig, Christian C.- Lingula is often considered a"living-fossil" based on its supposed lengthy morphological conservatism owing to its absence of evolution, and its remarkable survival for more than 550 M.Y. This conclusion is based on the typical apparently unchanged"linguliform" shape of the shell. However the taxa of the family Lingulidae show morphological evolutionary changes despite the fact that the group appears panchronic among the Recent Brachiopoda. Consequently, traditional opinion that Lingula is a"living-fossil" should be rejected. Diagnoses of the Family Lingulidae and of its three genera are herewith emended. CG2003_L01 Handle-ID: http://hdl.handle.net/2042/303

· The Cretaceous of the Elbe valley in Saxony (Germany) - a review. Tröger, Karl-Armin.- In Central Europe one of the most important interchanges between the North Temperate Realm and the Tethyan Realm took place during the Cenomanian along the course of the Elbe Valley Geosuture that separates the Erzgebirge block (part of the Mid European Island during the Cretaceous) from the Lusatian block (West Sudetic Island). Strata of the Lower Cretaceous and the basal portion of Lower Cenomanian are absent in the Elbe Valley Geosuture but a marine transgression in a NW-SE direction occupied a portion of this tract during the late Early Cenomanian and a second incursion from SE to NW occurred during the Late Cenomanian. (...) CG2003_A03 Handle-ID: http://hdl.handle.net/2042/295

· Micropaleontological investigations in the modern Mahakam delta, East Kalimantan (Indonesia). Lambert, Bernard.- The Mahakam delta is a mixed, fluvial and wave dominated delta located in the eastern part of the island of Borneo (the East Kalimantan province of Indonesia). The distribution of benthic fauna in this delta system is influenced by the combined or antagonistic action of three main parameters: fluvial input of fresh water and sediment, tide, and a strong regional north to south drift current. A model of the present-day faunal distribution has been established taking into account the perturbations induced by the tide and by the regional drift current. (...) CG2003_A02 Handle-ID: http://hdl.handle.net/2042/294

· The Cenomanian: stage of hindlimbed snakes. Rage, Jean-Claude; Escuillié, François.- Three"snakes with legs" are known: Pachyrhachis problematicus, Haasiophis terrasanctus and Eupodophis descouensi. They have short posterior limbs but lack an anterior girdle and forelimbs. Moreover, Pachyophis woodwardi, Mesophis nopcsai and Simoliophis ssp. appear to be closely related to the hindlimbed taxa; consequently, although the presence of posterior limbs has not been demonstrated for these genera, it is presumed that they too were hindlimbed. All these snakes have been recovered only from the Cenomanian. (...) CG2003_A01 Handle-ID: http://hdl.handle.net/2042/293

· Tools for linguloid taxonomy: the genus Obolus (Brachiopoda) as an example. Emig, Christian C.- This study points out some basic problems of linguloid systematics and proposes solutions for them. A taxonomic examination of the unique species of the genus Obolus found in the Upper Cambrian of Estonia and Russia, O. apollinis (= O. ruchini, O. transversus, O. rebrovi and Ungula convexa) is used as an example of a methodology employing all of the characters valid for distinguishing species of both extant and fossil Lingulidae. (...) CG2002_A01 Handle-ID: http://hdl.handle.net/2042/301

· Diatom based transfer function for estimating the chemical composition of fossil water. Calibration based on salt lakes of the Lipez area in the southwestern Bolivian Altiplano. Servant-Vildary, Simone ; Risacher, François; Roux, Maurice.- Diatom assemblages and water chemistry were studied in 13 shallow salt lakes in the southern part of the Bolivian Altiplano. At each locality bottom sediment and water samples were collected simultaneously. Relationships between the composition of the diatom assemblages and variations in water chemistry were collated in order to permit the estimation of ancient water chemistries based on changes in the make up of fossil diatom associations in older sediments. (...) CG2002_M01 Handle-ID: http://hdl.handle.net/2042/4566


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