Powder River 51-25/51-30/61-1 (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 16021: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Cimolesta - Palaeoryctidae
Palaeoryctes cf. punctatus Van Valen 1966 eutherian
 Leptictida - Leptictidae
Prodiacodon tauricinerei1 Jepsen 1930 eutherian
 Primates - Microsyopidae
Arctodontomys wilsoni1 Szalay 1969 primate
 Primates - Notharctidae
Cantius mckennai4 Gingerich and Simons 1977 primate
 Glires -
 Tribosphenida - Nyctitheriidae
Nyctitheriidae indet.2 Simpson 1928 placental
cf. 'Leptacodon' jepseni"
 Macroscelidea - Apheliscidae
Haplomylus speirianus Cope 1880 elephant shrew
 Ungulata - Hyopsodontidae
Hyopsodus sp.1 Leidy 1870 condylarth
 Hyaenodonta -
Prolimnocyon haematus3 Gingerich and Deutsch 1989 eutherian
Didelphodus absarokae Cope 1881 eutherian