نتایج جستجو برای: early eocene
تعداد نتایج: 689210 فیلتر نتایج به سال:
Badgley, C. and Gingerich, P. D., 1988. Sampling and faunal turnover in Early Eocene mammals. Palaeogeogr., Palaeoclimatol., Palaeoecol., 63: 141-157. Faunal turnovers in the fossil record are episodes of synchronous appearance and disappearance of species from a community, often resulting in net change in species richness. We studied the biostratigraphic record of faunal turnover involving ear...
The African Hyaenodontida, mainly known from the Late Eocene and Early Oligocene Fayum depression in Egypt, show a very poor diversity in oldest Paleogene localities. Here we report new hyaenodontidans found in the late Middle Eocene deposits of Dur At-Talah (Central Libya), known to have recorded the earliest radiation of African anthropoids. The new hyaenodontidan remains are represented by d...
Abstract The spider crabs Willinachoides santanai n. gen. sp. from the early-middle Miocene of north Brazil and Paradasygyius rodriguezi late Venezuela are described illustrated. Additionally, Eoinachoides senni Van Straelen, 1933, Oligocene–early Venezuela, is redescribed based on photographs holotype, diagnosis latispinosus Carriol, Muizon, Secretan, 1987, Peru, emended also basis holotype. p...
Multimillion-year proxy records across the Paleocene and Eocene show prominent variations on orbital time scales. The cycles, which have been identified at various sites across the globe, preferentially concentrate spectral power at eccentricity and precessional frequencies. It is evident that these cycles are an expression of changes in global climate and carbon cycling paced by astronomical f...
The record of extinct African metatherians (Mammalia, Theria) is scanty, restricted in time (Eocene–Miocene), and its taxonomy still subject debate. A review all metatherians, or alleged known up to now, led us the recognition only three taxa referable this group: (1) Kasserinotherium tunisiense (Peradectoidea?), from early Eocene Tunisia; (2) Peratherium africanum  ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید