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Stanley Pool is a Cretaceous continental formation which outcrops Southeast of Gabon to Congo. The current investigations performed in this continental formation in Gabon just revealed seven dinosaur footprints on pieces of argillites flags. The analysis of these more or less well preserved footprints highlights three morphotypes. Morphotype 1 comprises footprints 1, 2, 3 and 4 of the same shape but of different sizes. These footprints belong to tridactylous dinosaurs. Morphotype 2 comprises footprints 5 and 6 whose shape is oval. They would correspond to sauropods. Finally morphotype 3 only represented by the footprint 7 consists of four fingers. This well-preserved footprint would belong to a tetradactylous dinosaur. This major discovery is the first record of dinosaurs in Gabon. It strengthens the knowledge of dinosaurs palaeoichnology in Africa.
Dans le département de l'Aube, région stratotypique de l'étage Albien, plusieurs forages réalisés en 2013 ont traversé la plus grande partie des Argiles tégulines de Courcelles ou « Gault » auct. (Albien inférieur et moyen), les Sables verts de l'Aube (Aptien supérieur), les Argiles à Plicatules (Aptien inférieur), les Sables et argiles bariolées (Barrémien supérieur) et la partie supérieure des Argiles ostréennes (Barrémien inférieur). Une description lithologique détaillée de la succession est réalisée dans le but d'améliorer la connaissance du Crétacé inférieur de la bordure orientale du bassin de Paris dont les affleurements sont peu nombreux et discontinus. En ce qui concerne l'étage Albien, l'extension latérale importante de nombreux niveaux repères correspondant à des événements lithologiques et bio-écologiques et les attributions stratigraphiques fondées sur les ammonites conduisent à proposer des corrélations précises avec d'autres coupes dans l'Aube, l'Yonne et le Perthois.
The systematic, paleoecology and taphonomy of the Turonian (Azilé Formation) oysters fauna from the geological section PK 12, South of Libreville - Gabon, are carried out. Twelve species from seven genera are described. Genera Curvostrea Vyalov, 1936 ; Gryphaeostrea Conrad, 1865 ; Gyrostrea Mirkamalov, 1963 ; IlymatogyraStenzel, 1971 ; Ostrea Linnaeus, 1758 ; Rhynchostreon Bayle, 1878 and all species are recorded herein for the time in Gabonese coastal basin. The assemblage is dominated by representatives of the genus Ostrea and can be regarded as parautochthonous. The oyster shells are thin and thick with medium to large size. The paleoecological study indicates a nearshore shallow marine environment with high energy, nutrient-rich and well oxygenated water column. Taphonomic observations show that shells of oyster are affected by disarticulation. Bioerosion, traces of predators and encrustation are scarcity or absence. Abrasion, breackage and high fragmentation of shell are generally lacking.
Les ostracodes de la collection de P. Margerie (1967, 1968) en provenance des couches à Laffittéines du Mont Aimé, à l'est de Paris sont réétudiés et ré-illustrés. Parmi les 74 espèces distinguées, 34 sont connues exclusivement dans le Crétacé supérieur ou appartiennent à des genres inconnus dans le Paléocène, 17 sont nouvelles ou déterminées avec imprécision mais sont plus proches d'espèces maastrichtiennes que d'espèces paléocènes, enfin 23 ne sont représentées que par des valves ou des carapaces indéterminables car larvaires ou trop encroutées. Cytherelloidea biloculataVan Veen, 1932, Amphicytherura chelodon (Marsson, 1880), Veenidea hendrikiDeroo, 1966, Planileberis? corrosa (Van Veen, 1936), Dumontina? cuvieri (Van Veen, 1936), Kingmaina hagenowi (Bosquet, 1854), Mauritsina hieroglyphica (Bosquet, 1847), Aysegulina? cuvieri (Van Veen, 1936), Aysegulina depressa (Deroo, 1966), Occultocythereis? complanata (Bosquet, 1854), Acuticytheritta infundibuliformi (Van Veen, 1936), Neocythere virginea (Jones, 1849), Sphaeroleberis saccata (Marsson, 1880) et Crassacythere sherborni (Jones & Hinde, 1890) sont particulièrement intéressantes car bien caractérisées morphologiquement et sont pour la plupart maastrichtiennes. Cytherelloidea biloculataVan Veen, 1932 n'est connue hors de la région de Reims que dans le Maastrichtien type, mais une espèce voisine a été recueillie dans le Paléocène du bassin de Paris. Amphicytherura chelodon (Marsson, 1880) est présente dans le Maastrichtien d'Angleterre, d'Irlande et du nord de l'Allemagne (Kaye 1964 ; Herrig 1966 ; Neale 1978 ; Slipper 2009). Veenidea hendrikiDeroo, 1966 fut décrite dans le Maastrichtien supérieur de la région de Maastricht ainsi que Planileberis? corrosa (Van Veen, 1936), Dumontina? cuvieri (Van Veen, 1936), Aysegulina depressa (Deroo, 1966), Occultocythereis? complanata (Bosquet, 1854) et Acuticytheritta infundibuliformi (Van Veen, 1936). Kingmaina hagenowi (Bosquet, 1854) est connue dans le Maastrichtien supérieur du Limbourg et dans les niveaux à Orbitoides media du Maastrichtien inférieur de Charente-Maritime (Deroo 1966). Neocythere virginea (Jones, 1849) est une espèce du Crétacé supérieur du Kent, en Grande-Bretagne. Sphaeroleberis saccata (Marsson, 1880) fut décrite dans le Maastrichtien supérieur mais est citée aussi dans l
Un site paléontologique du Sud-Ouest du Bassin parisien est décrit: l'ancienne falunière du Grand Morier. Il se situe à l'ouest de la ville de Langeais et au sud du hameau de Pont-Boutard (Indre-et-Loire, France). Le contexte géologique du Grand Morier est complexe. Toutes les formations sédimentaires cénozoïques locales sont représentées sur le site: les formations continentales étagées depuis le Paléogène moyen jusqu'au Miocène, les faluns marins du Miocène et les formations continentales de la fin du Néogène. Les phénomènes de tectonique locale (phases pyrénéenne et alpine) ont contraint et canalisé la sédimentation cénozoïque dans une structure en graben. De nombreux fossiles de vertébrés cénozoïques ont été trouvés dans le site paléontologique du Grand Morier. La consultation de 450 fossiles de vertébrés conservés dans différentes collections a permis de réaliser une liste faunique composée de 102 taxons. Les données géologiques et taphonomiques ont permis de reconstituer des assemblages de fossiles de même âge et de même état de conservation. Six ensembles biostratigraphiques bien distincts ressortent: deux faunes continentales en place de l'Éocène (MP12 à MP20) et Oligocène-Agénien supérieur (MP24 à MN2), une faune marine en place — ou faiblement remaniée — dans les faluns miocènes (Burdigalien supérieur à Tortonien) et trois faunes remaniées (Crétacé supérieur au Miocène) dans les faluns miocènes. Ces assemblages de fossiles de vertébrés recadrent et précisent la stratigraphie du Cénozoïque local.
The paleontological site of Le Grand Morier (Pont-Boutard, Indre-et-Loire, France): geological context and vertebrate biostratigraphy of the Cenozoic formations.
A paleontological site of the Paris Basin is described here: Le Grand Morier quarry. This site is located West of the Langeais city and South of the hamlet of Pont-Boutard (Indre-et-Loire, France). The geological context of Le Grand Morier is complex. The site comprises all local late Cenozoic sedimentary formations cropping out locally: the Paleogene to lower Orleanian continental formations, the Miocene marine shelly sands and the Upper Neogene continental formations. Local tectonic phenomena (Pyrenean and Alpine phases) created a graben structure, which has focused most of the Cenozoic sedimentation. Many fossils of Cenozoic vertebrates have been found in the paleontological site of Le Grand Morier. For the purpose of this study, 450 fossils of vertebrates (102 taxa) have been studied in various paleontological collections. The geological and taphonomic contexts enabled the recognition of fossil clusters based on their hypothesized age and preservation state. The paleontological study reveals six distinct groups: two in situ continental faunas Eocene (MP12 to MP20) and Oligocene-Early Miocene (MP24 to MN2) in age, an in situ or slightly reworked Miocene marine fauna (upper Burdigalian to Tortonian) and three clusters of reworked fossils (upper Cretaceous to Miocene) in the Miocene shelly sands. These vertebrate fossils clusters improve the resolution of the Cenozoic stratigraphic framework of the area.
ABRIDGED ENGLISH VERSION
The paleontological site of Le Grand Morier is located in the heart of the Ligerian Basin, 40 kilometers West from the city of Tours (Temey 1996). This fossiliferous site corresponds to an old quarry where the Miocene shelly sand was exploited (Fig. 1). The most important geological and paleontological studies of Le Grand Morier are those of Lecointre (1930, 1947), Alcaydé (1975) and Alcaydé et al. (1976) for the geological surveys (geological mapping,
The genus NeoplanorbulinellaMatsumaru, 1976 was firstly identified in the Lower Miocene of Saipan and Mariana Islands in the Western Pacific. The present paper reports on its occurrence in the Lower Oligocene of Malatya Basin (Eastern Taurids, East Turkey). Neoplanorbulinella is characterized by a conical test, having several sized equatorial chambers irregularly arranged around the cone, and lateral chambers underdeveloped in umbilical cavity. The new planorbulinid species, namely Neoplanorbulinella matsumarui n. sp. and Neoplanorbulinella malatyaensis n. sp., are recorded in the Muratlı Formation (Malatya Basin, Turkey), which is dated to the Rupelian-early Chattian. The new species are associated to an assemblage of the SB 21–22 larger foraminiferal zone. The new species are described, and their affinities are discussed.
The Early Pliocene locality of Çalta, Turkey (Ruscinian Age, c. 4.0 Ma) has two species of advanced hipparionine horses that we refer to Plesiohipparion cf. longipes (Gromova, 1952) and Proboscidipparion heintzi (Eisenmann & Sondaar, 1998). Our study follows an extensive treatment of the entire mammalian fauna in 1998 and in particular an important and comprehensive work on the hipparions by Eisenmann & Sondaar in 1998. We undertake herein a morphologic and metric analysis of skulls, mandibles, dentitions and postcranial elements to segregate all elements into these two taxa. Our analysis follows and concurs with Eisenmann & Sondaar's work except for the generic attributions here which are original. Beyond the basic empirical work here, we strike comparisons to other Old World hipparion lineages and find that these two hipparion taxa compare closely, at the genus level, to Asian PlesiohipparionQiu, Huang & Guo, 1987 and ProboscidipparionSefve, 1927. Our comparisons further elucidate that Plesiohipparion had undertaken a range extension into Anatolia by 7.1 Ma where it is present at the locality of Akkașdağı. Our work suggests that Proboscidipparion extended its range from China into Anatolia in the Early Pliocene. Reevaluation of the entire Çalta mammalian fauna suggests that Anatolia was a dynamic biogeographic region in the Early Pliocene including endemic forms, Late Miocene Eurasian holdovers and Asian and African immigrant taxa. Turkey was in fact a Eurasian cross-roads region of active intercontinental mammalian migrations in the Early Pliocene.
The Cooper's Cave System has produced a diverse fossil assemblage including the remains of Paranthropus robustusBroom, 1938, and early HomoLinnaeus, 1758. The majority of the faunal remains come from Cooper's D, which dates to c. 1.5–1.4 Ma. Here we describe 158 craniodental and postcranial felid fossils from Cooper's D, including Dinofelis cf. aronoki. These fossils indicate the presence of four large felid genera at Cooper's D: DinofelisZdansky, 1924, MegantereonCroizet & Jobert, 1828, PantheraOken, 1816 (two species) and AcinonyxBrookes, 1828, plus two smaller taxa: CaracalGray, 1843 and FelisLinnaeus, 1758. This assemblage may mark the first appearance of the modern cheetah Acinonyx jubatus (Schreber, 1775) in Africa, as well the first occurrence of the East African species Dinofelis cf. aronoki in southern Africa. This taxon appears intermediate in features between Dinofelis barlowi (Broom, 1937) and Dinofelis piveteaui (Ewer, 1955). We compare the Cooper's D felid assemblage with those from other sites in the Cradle of Humankind, Gauteng, and discuss several scenarios for the evolution of the genus Dinofelis in eastern and southern Africa.
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