Northwest Corner of Shotgun Butte (Eocene of the United States)

Where: Fremont County, Wyoming (43.2° N, 108.2° W: paleocoordinates 48.0° N, 91.4° W)

• coordinate based on political unit

When: Indian Meadows Formation, Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Primary reference: W. R. Keefer and M. L. Troyer. 1964. Geology of the Shotgun Butte area, Fremont County, Wyoming. United States Geological Survey Bulletin 1157:1-123 [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 16008: authorized by John Alroy, entered by John Alroy on 30.04.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

• Keefer 1965 lists "Creodont (mesonychid?)" and it is not clear why this is omitted here because Keefer's list seems to be more preliminary
Mammalia
 Theriamorpha - Phenacodontidae
Phenacodus sp. Cope 1873 condylarth
Ectocion cf. osbornianus Cope 1882 condylarth
 Perissodactyla - Equidae
Equidae indet. Gray 1821 horse