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Se presenta la taxonomía de 57 ejemplares bivalvos tanto moldes internos como externos que corresponden a tres géneros de paleotaxodontes Praectenodonta, Praenucula y Notonucula. El material proviene de 9 columnas estratigráficas levantadas en secciones del Silúrico y Devónico del Altiplano, la Cordillera oriental y el Interandino de Bolivia. Por primera vez en Bolivia, se registran los géneros Praectenodonta...
Two new species of canaliculate rudist genus Dictyoptychus Douvillé: Dictyoptychus quadrizonalis n. sp. and Dictyoptychus vanensis n. sp., are described from the Maastrichtian limestone block of the ophiolitic unit of the Gevaş-Van area, southeastern Turkey. The new species are mainly characterized by the complex structure of the canal layer of the lower valve, and also they seem to be most primitive...
Doryaspis groenhorgensis nov. sp. est un nouveau Ptéraspidiforme du dévonien inférieur du Spitsberg. Le genre Doryaspis est ainsi le Ptéraspidiforme le plus abondant (tant en nombre d'espèces qu'en nombre de spécimens) de la formation de Wood Bay avec cinq espèces actuellement décrites. Il apparaît que la biodiversité des Ptéraspidiformes présents au Spitsberg dans la formation de Wood Bay a été sous-estimée...
An explosion set off in a limestone quarry located in the surroundings of Rapino (Chieti, central Italy), in the National Park of the Maiella Massif, exposed a small cave containing a Late Pleistocene fauna and Mousterian tools. Amongst the specimens is a fairly well preserved dorsal portion of a left mandibular corpus with associated M 1 and M 2 attributable to Macaca. The Grotta...
Alces alces, Cervalces and Megaloceros giganteus are deer of approximately the same size whose limb bones could be exchanged if fragmentary so morphological features are needed, enabling identification of postcranials remains. In this work the limb bone features described by Pfeiffer (1999a) as distinguishing Cervalces latifrons from M. giganteus are re-analyzed and further developed, considering...
We describe the following Sieblosiidae: an unamed “gen. and sp. A” from the Miocene of Italy, Miostenolestes zherikhini nov. gen., nov. sp., Paraoligolestes stavropolensis nov. sp., Stenolestes fasciata nov. sp. (all from the Miocene of North Caucasus), Stenolestes (?) adygeianensis nov. sp. (Oligocene of North Caucasus), and Stenolestes cerestensis nov. sp. (Oligocene of France). The genus Sieblosia...
L’examen biométrique des hétérostégines confirme la présence de l’espèce Heterostegina papyracea Seguenza, 1880 dans les sables de la Formation de l’oued Yhoudi, d’âge tortonien. L’analyse quantitative des foraminifères benthiques dans cette formation met en évidence la grande abondance des hétérostégines (plus de 60 % du total des foraminifères benthiques), qui sont associés à de petits foraminifères...
The Miocene basin of La Cerdanya (Pyrenees, Catalonia, Spain) consist of lacustrine diatomites and fan-deltaic (palustrine) lutites with lignites. A multidisciplinary analysis of palynofacies, organic geochemistry, taphofacies of plant macroremains and sedimentology was carried out in order to characterise taphonomically this basin. Palustrine facies contain highly diverse assemblages of palynomorphs...
La présente étude analyse le contenu en diatomées pyritisées de l'intervalle Paléocène–Éocène du sondage CC82 de Saint-Josse. Saint-Josse est localisé en France, dans le nord du bassin de Paris et a les coordonnées suivantes : X=555 000, Y=307 324 et Z=56,9 m. Normalement constituées d'un frustule siliceux, les diatomées des sédiments concernés ont été pyritisées, d'une part, par épigénie transformant...
Recent benthic foraminiferal assemblages in surface sediments of the Rockall Trough (NE Atlantic) have been qualitatively and quantitatively studied in order to investigate the effects of hydrocarbon seepage on benthic foraminiferal populations. Species diversity and abundance data have been examined in samples of similar lithology collected from hydrocarbon seep and non-seep (control) areas at a...
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