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Rise and Fall of the Beringian Steppe Bison
The widespread extinctions of large mammals at the end of the Pleistocene epoch have often been attributed to the depredations of humans; here we present genetic evidence that questions thisExpand
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Spatial Response of Mammals to Late Quaternary Environmental Fluctuations
Analyses of fossil mammal faunas from 2945 localities in the United States demonstrate that the geographic ranges of individual species shifted at different times, in different directions, and atExpand
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Paleopathology Disease in the Fossil Record
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Species-specific responses of Late Quaternary megafauna to climate and humans
Despite decades of research, the roles of climate and humans in driving the dramatic extinctions of large-bodied mammals during the Late Quaternary period remain contentious. Here we use ancient DNA,Expand
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Fossil History of the Terrestrial Carnivora
Carnivores, because of their position on the ecological pyramid, are considerably rarer than their prey. They are also often intelligent and solitary animals, so that their chances of dying in aExpand
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Mycobacterium tuberculosis complex DNA from an extinct bison dated 17,000 years before the present.
In order to assess the presence of tuberculosis in Pleistocene bison and the origin of tuberculosis in North America, 2 separate DNA extractions were performed by 2 separate laboratories on samplesExpand
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Bone microstructure of the divingHesperornisand the voltantIchthyornisfrom the Niobrara Chalk of western Kansas
Abstract We report on the bone microstructure of the Cretaceous birdsHesperornis regalisandIchthyornis victor. Thin sections of representative elements of both these ornithurine birds show a rapid,Expand
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Evolution of the extinct Sabretooths and the American cheetah-like cat
The sabretooths (Smilodon and Homotherium) and the American cheetah-like cat (Miracinonyx) were the top predators in Late Pleistocene America, but became extinct about 13 thousand years ago. As theExpand
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Phylogeography of lions (Panthera leo ssp.) reveals three distinct taxa and a late Pleistocene reduction in genetic diversity
Lions were the most widespread carnivores in the late Pleistocene, ranging from southern Africa to the southern USA, but little is known about the evolutionary relationships among these PleistoceneExpand
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