A5102866614- Evolution and Paleontology Studies
- Pleistocene-Era Hominins and Archaeology
- Canadian Identity and History
- Ancient Mediterranean Archaeology and History
- Classical Antiquity Studies
- Primate Behavior and Ecology
- Geology and Paleoclimatology Research
- Historical Studies and Socio-cultural Analysis
- Paleontology and Evolutionary Biology
- Bat Biology and Ecology Studies
- Historical and Literary Studies
- Medieval European Literature and History
- French Urban and Social Studies
- Wildlife Ecology and Conservation
- Forensic Anthropology and Bioarchaeology Studies
- European Political History Analysis
- Fish biology, ecology, and behavior
- Animal Ecology and Behavior Studies
- Morphological variations and asymmetry
- Fish Biology and Ecology Studies
- Ichthyology and Marine Biology
- Advanced Frequency and Time Standards
- Marine and coastal ecosystems
- Maritime and Coastal Archaeology
- Geological formations and processes
French School at Athens
2007-2024
Histoire et Sources des Mondes Antiques
2007-2024
Centre National de la Recherche Scientifique
2010-2023
Université de Poitiers
2009-2023
Anthropologie et Histoire des Mondes Antiques
1997-2023
Collège de France
2010-2023
Institut de Paléontologie Humaine
2010-2023
Société Française d'Allergologie
2022
Institute of Paleoprimatology Human Paleontology Evolution and Paleoenvironments
2008-2020
Université Claude Bernard Lyon 1
2019
The history of Eastern African hominids has been linked to a progressive increase open grassland during the past 8 million years. This trend was explained by global climatic processes, which do not account for massive uplift eastern topography that occurred this period. Atmosphere and biosphere simulations quantify role played these tectonic events. reduced topographic barrier before years ago permitted zonal circulation with associated moisture transport strong precipitation. Our results...
A diverse assemblage of large mammals is spatially and stratigraphically associated with Ardipithecus ramidus at Aramis. The most common species are tragelaphine antelope colobine monkeys. Analyses their postcranial remains situate them in a closed habitat. Assessment dental mesowear, microwear, stable isotopes from these wider range abundant larger indicates that the local habitat Aramis was predominantly woodland. Ar. enamel isotope values indicate minimal C 4 vegetation component its diet...
Ages were determined at two hominid localities from the Chad Basin in Djurab Desert (Northern Chad). In Koro Toro fossiliferous area, KT 12 locality (16 degrees 00'N, 18 53'E) was site of discovery Australopithecus bahrelghazali (Abel) and Toros-Menalla TM 266 15'N, 17 29'E) Sahelanthropus tchadensis (Toumaï). At both localities, evolutive degree associated fossil mammal assemblages allowed a biochronological estimation remains: early Pliocene (3-3.5 Ma) late Miocene ( approximately 7 266....
Foods derived from C 4 plants were important in the dietary ecology of early Pleistocene hominins southern and eastern Africa, but origins geographic variability this relationship remain unknown. Carbon isotope data show that Australopithecus bahrelghazali individuals Koro Toro Chad are significantly enriched 13 C, indicating a dependence on resources. As these sites over 3 million years age, results extend pattern seen Paranthropus boisei East Africa by more than 1.5 years. The hominin...
Chad is a key region for understanding early hominid geographic expansion in relation to late Miocene and Pliocene environmental changes, owing its location 2500 km west from the Rift Valley occurrence of sites ranging age about 6 3 Ma, some which yield fossil hominids. To reconstruct changes herbivore paleodiet therefore paleoenvironment, we measured carbon oxygen isotope composition 80 tooth-enamel samples three time horizons nine families Perissodactyla, Proboscidea, Artiodactyla. The...
The origin of late Neogene Hippopotamidae (Artiodactyla) involves one the most serious conflicts between comparative anatomy and molecular biology: is Artiodactyla paraphyletic? Molecular comparisons indicate that Cetacea should be modern sister group hippos. This finding implies existence a fossil lineage linking cetaceans (first known in early Eocene) to hippos middle Miocene). relationships within are challenging, immediate affinities have been studied by biologists for almost two...
The recent reconstruction of the Sahelanthropus tchadensis cranium (TM 266-01-60-1) provides an opportunity to examine in detail differences cranial shape between this earliest-known hominid, African apes, and other hominid taxa. Here we compare TM 266-01-60-1 with crania humans, several Pliocene hominids. results not only confirm that is a but also reveal unique mosaic characters. shares many primitive features chimpanzees overall most similar Australopithecus , particularly basicranium....
In this paper, we describe four fossil rodent taxa from two new localities situated in the Idam Unit ('Bioturbated Unit') of Dur At-Talah escarpment central Libya. These rodents belong to family Phiomyidae (Hystricognathi) and are distributed amongst three genera (Phiomys, Protophiomys, Talahphiomys gen. nov.) that include species (Phiomys hammudai sp. nov., Protophiomys durattalahensis libycus nov.). Although some these morphologically close certain phiomyids latest Eocene Oligocene Jebel...
Tracking terrestrial environmental change throughout the Neogene is a challenge, notably in areas such as Central Africa where few available data consist of vertebrate fossil assemblages. Here we aim to quantify evolution δ 18 O main water body between four wet episodes Chad basin, ranging from Late Miocene early Pliocene. The open was inferred oxygen isotope measurements phosphate apatite fish tooth enamel. more habitat, lower O, revealed by teeth large tiger ( Hydrocynus ) sampled Chadian...
Un ancrage planaire sur les parois vitreuses qui limitent un échantillon smectique C chiral provoque réseau de paires lignes défauts, distantes du pas hélicoïdal. Ces raccordent la zone chirale située dans le milieu aux zones non chirales accolées parois. modèle permet rendre compte leur existence.
(2000). Chad: discovery of a vertebrate fauna close to the Mio-Pliocene boundary. Journal Vertebrate Paleontology: Vol. 20, No. 1, pp. 205-209.