Big Rock Ranch (Paleogene of the United States)
Also known as UCM 78060
Where: Rio Blanco County, Colorado (40.0° N, 107.9° W: paleocoordinates 45.3° N, 90.4° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: DeBeque Formation, Clarkforkian (56.2 - 54.9 Ma)
• said to be Clarkforkian
Environment/lithology: terrestrial
Primary reference: A. J. Kihm. 1984. Early Eocene Mammalian Fauna of the Piceance Creek Basin. Northwestern Colorado. [J. Alroy/J. Alroy/M. Uhen]more details
PaleoDB collection 15219: authorized by John Alroy, entered by John Alroy on 27.09.1993
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Mammalia | |
|
cf. Chiromyoides sp. Stehlin 1916 primate | |
|
? Franimys sp. Wood 1962 rodent | |
|
Ptilodus sp. Cope 1881 multituberculate | |