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| Beginning of the age of mammals in Asia : the late Paleocene Gashato fauna, Mongolia. Bulletin of the AMNH ; v. 144, article 4 |
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| Title: | Beginning of the age of mammals in Asia : the late Paleocene Gashato fauna, Mongolia. Bulletin of the AMNH ; v. 144, article 4 |
| Other Titles: | Late Paleocene Gashato fauna, Mongolia Gashato fauna |
| Authors: | Szalay, Frederick S. McKenna, Malcolm C. Central Asiatic Expeditions (1921-1930) |
| Issue Date: | 1971 |
| Publisher: | New York : [American Museum of Natural History] |
| Series/Report no.: | Bulletin of the American Museum of Natural History ; v. 144, article 4 |
| Abstract: | "The earliest Tertiary mammalian fauna known from Asia occurs in southern Mongolia, where it is found in late Paleocene sediments approximately 55 million years old exposed at Gashato and in the Nemegt Basin. Romer (1966) has proposed, but not defined, a 'Gashatan Asiatic Age' for the Gashato fauna and we propose that the term be extended to the occurrence of the same fauna, although to a different faunal facies, in the Nemegt Basin, subsuming Romer's (1966) 'Ulanbulakian Asiatic Age.' We supply a definition of the 'Gashatan Asiatic Age': the joint overlapping time ranges of Palaeostylops, Pseudictops, Prionessus, and Eurymylus. Additional localities in Sinkiang and Kwangtung may also be Gashatan in age. The Gashato fauna is made up of a mixture of endemic genera and a few genera that evidently reached Asia via the Bering route from North America and beyond. There is no special similarity to Paleocene faunas of Europe, but this could be because of a double filtering action. Gashatan ma... |
| Description: | p. 271-317 : ill., maps ; 27 cm. Includes bibliographical references (p. 314-317). |
| URI: | http://hdl.handle.net/2246/1085 |
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