| |
| Small rodents (Mammalia) from Eocene deposits of San Diego County, California. Bulletin of the AMNH ; v. 158, article 4 |
| |||||||||||
| Download Problems | |
| Title: | Small rodents (Mammalia) from Eocene deposits of San Diego County, California. Bulletin of the AMNH ; v. 158, article 4 |
| Authors: | Lillegraven, Jason A., 1938- |
| Issue Date: | 1977 |
| Publisher: | New York : American Museum of Natural History |
| Series/Report no.: | Bulletin of the American Museum of Natural History ; v. 158, article 4 |
| Abstract: | "Four genera (Microparamys, Sciuravus, Griphomys, and Pareumys) and seven species of small rodents are discussed from Eocene deposits in two areas of San Diego County, California. Fossils from the greater San Diego area (Friars and Mission Valley formations) suggest an earliest 'Uintan' (roughly mid Eocene) age. Specimens from the northwesternmost corner of San Diego County in Camp Pendleton Marine Corps Base (?Santiago Formation) suggest a significantly younger assemblage, time-correlative with the Uintan part of the Sespe Formation of Ventura County, California. Sciuravus does not occur in the Pendleton-Sespe localities nor does Griphomys in the greater San Diego area. One species (Griphomys toltecus) is described as new from Camp Pendleton. Detailed comparisons of the San Diego fauna with taxa from the Rocky Mountain region suggest that widespread overland dispersal of land vertebrates across western North America was possible during at least some part of the earlier Eocene, even by... |
| Description: | p. 223-261 : ill. ; 26 cm. Includes bibliographical references (p. 259-261). |
| URI: | http://hdl.handle.net/2246/1293 |
| Department of Library Services
American Museum of Natural History Central Park West at 79th St., New York, NY 10024 © American Museum of Natural History, 2006 Powered by DSpace
|
||