Elk Creek (150 m) (Eocene of the United States)

Also known as YPM 109, 394

Where: Big Horn County, Wyoming (44.5° N, 108.0° W: paleocoordinates 49.2° N, 90.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Primary reference: D. M. Schankler. 1980. Faunal Zonation of the Willwood Formation in the Central Bighorn Basin, Wyoming. University of Michigan Papers on Paleontology 24:99-114 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 15511: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Cimolesta - Coryphodontidae
Coryphodon sp., Coryphodon sp.
Coryphodon sp. Owen 1845 pantodont
"2"
Coryphodon sp. Owen 1845 pantodont
"1"
 Cimolesta - Esthonychidae
Esthonyx spatularius
Esthonyx spatularius Cope 1880 tillodont
 Condylarthra - Hyopsodontidae
Hyopsodus sp.
Hyopsodus sp. Leidy 1870 condylarth
"loomisi/minor"
 Primates - Omomyidae
Tetonius matthewi2
Tetonius matthewi2 Bown and Rose 1987 tarsier
 Primates - Notharctidae
Cantius sp.1
Cantius sp.1 Simons 1962 primate
 Creodonta - Hyaenodontidae
Tritemnodon sp.
Tritemnodon sp. Matthew 1906 creodont
"1"
 Ferae - Viverravidae
Didymictis leptomylus
Didymictis leptomylus Cope 1880 placental
 Tribosphenida - Phenacodontidae
Phenacodus intermedius, Copecion brachypternus1
Phenacodus intermedius Granger 1915 condylarth
Copecion brachypternus1 Cope 1882 condylarth
 Perissodactyla - Equidae
"Hyracotherium aemulor" = Arenahippus aemulor
"Hyracotherium aemulor" = Arenahippus aemulor Gingerich 1991 horse
"H. sp. 2"
 Artiodactyla - Diacodexeidae
Diacodexis sp.1
Diacodexis sp.1 Cope 1882 even-toed ungulate
1Alroy 2002; 2Bown and Rose 1987