Powder River 51-11/12/13 (Eocene of the United States)

Where: Johnson County, Wyoming (44.0° N, 106.6° W: paleocoordinates 48.5° N, 89.4° W)

• coordinate based on political unit

When: "Wasatch" Formation, Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Primary reference: E. Delson. 1971. Fossil mammals of the early Wasatchian Powder River local fauna, Eocene of northeast. Bulletin of the American Museum of Natural History 146(4) [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 16017: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Primates - Microsyopidae
Arctodontomys wilsoni1 Szalay 1969 primate
 Primates - Notharctidae
Cantius mckennai3 Gingerich and Simons 1977 primate
 Cimolesta - Coryphodontidae
Coryphodon sp. Owen 1845 pantodont
 Perissodactyla - Palaeotheriidae
Hyracotherium sp.1 Owen 1841 odd-toed ungulate
 Ungulata - Diacodexeidae
Diacodexis primus4 Krishtalka and Stucky 1985 even-toed ungulate
 Hyaenodonta - Hyaenodontidae
Arfia zele2 Gingerich and Deutsch 1989 eutherian