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| New early Eocene mammalian fauna from western Patagonia, Argentina. (American Museum novitates, no. 3638) |
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| Title: | New early Eocene mammalian fauna from western Patagonia, Argentina. (American Museum novitates, no. 3638) |
| Other Titles: | Eocene mammals from western Patagonia. |
| Authors: | Tejedor, Marcelo F. Goin, Francisco J. Gelfo, Javier N. López, Guillermo, paleontologist. Bond, Mariano. Carlini, Alfredo A. Scillato-Yané, Gustavo J. Woodburne, Michael O. Chornogubsky, Laura. Aragón, Eugenio. Reguero, Marcelo. Czaplewski, Nicholas J. Vincon, Sergio. Martin, Gabriel M. Ciancio, Martín. |
| Keywords: | Mammals, Fossil. Paleontology. Argentina. Chubut. Eocene. |
| Issue Date: | 2009 |
| Series/Report no.: | American Museum novitates, no. 3638. |
| Abstract: | Two new fossil mammal localities from the Paleogene of central-western Patagonia are preliminarily described as the basis for a new possible biochronological unit for the early Eocene of Patagonia, correlated as being between two conventional SALMAs, the Riochican (older) and the Vacan subage of the Casamayoran SALMA. The mammal-bearing strata belong to the Middle Chubut River Volcanic-Pyroclastic Complex (northwestern Chubut Province, Argentina), of Paleocene-Eocene age. This complex includes a variety of volcaniclastic, intrusive, pyroclastic, and extrusive rocks deposited after the K-T boundary. Geochronological data taken from nearby volcanic deposits that underlie and overlie the mammal-bearing levels indicate that both faunas are of late early Eocene age (Ypresian-Lutetian boundary). In addition to more than 50 species of mammals, including marsupials, ungulates, and xenarthrans, two lower molars are the oldest evidence of bats in South America. Paleobotanical and palynological e... |
| Description: | 43 p. : ill., map ; 26 cm. "March 31, 2009." Includes bibliographical references (p. 38-43). |
| URI: | http://hdl.handle.net/2246/5957 |
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