Powder River (UCM 84117) (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

• small collection-level geographic resolution

When: Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Reposited in the UCM

Primary reference: P. Robinson and B. A. Williams. 1997. Species diversity, tooth size, and shape of Haplomylus (Condylarthra, Hyopsodontidae) from the Powder River Basin, northeastern Wyoming. Contributions to Geology, University of Wyoming 31(2):59-78 [J. Alroy/J. Alroy/P. Holroyd]more details

PaleoDB collection 16039: authorized by John Alroy, entered by John Alroy on 05.01.1995, edited by Jonathan Marcot and Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Macroscelidea - Apheliscidae
Haplomylus speirianus
Haplomylus speirianus Cope 1880 elephant shrew
 Condylarthra - Hyopsodontidae
Hyopsodus sp.1
Hyopsodus sp.1 Leidy 1870 condylarth
 Perissodactyla - Equidae
"Arenahippus cf. grangeri" = Sifrhippus grangeri2
"Arenahippus cf. grangeri" = Sifrhippus grangeri2 Gingerich 1989 horse
 Primates - Micromomyidae
Tinimomys graybulliensis3
Tinimomys graybulliensis3 Szalay 1974 primate
 Primates - Paromomyidae
Simpsonlemur sp.4
Simpsonlemur sp.4 Robinson and Ivy 1994 primate
forms "B" and "C"
1Cuozzo 2002; 2Froehlich 2002; 3Robinson 1994; 4Robinson and Ivy 1994