PBDB Collection

Elk Creek (430 m) (Eocene of the United States)

Also known as YPM 83, 86, 271, USGS D-1379 (430 m), 1381 (430 m)

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 15540: 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
Ferae - Metacheiromyidae	Palaeanodon ignavus Palaeanodon ignavus Matthew 1918 placental
Ferae -	Miacis sp.¹, Vulpavus australis Miacis sp.¹ Cope 1872 placental Vulpavus australis Matthew and Granger 1915 placental
Creodonta - Oxyaenidae	Oxyaena sp. Oxyaena sp. Cope 1874 creodont "intermedia/forcipata"
Artiodactyla - Diacodexeidae	Diacodexis sp.¹ Diacodexis sp.¹ Cope 1882 even-toed ungulate
Tribosphenida - Phenacodontidae	Copecion brachypternus¹ Copecion brachypternus¹ Cope 1882 condylarth
Perissodactyla - Equidae	"Hyracotherium grangeri" = Sifrhippus grangeri "Hyracotherium grangeri" = Sifrhippus grangeri Gingerich 1989 horse "H. sp. 1"
Primates - Omomyidae	Absarokius metoecus² Absarokius metoecus² Bown and Rose 1987 tarsier USGS D-1379, 1381
Condylarthra - Hyopsodontidae	Hyopsodus sp. Hyopsodus sp. Leidy 1870 condylarth "latidens/miticulus"
Cimolesta - Esthonychidae	Esthonyx bisulcatus Esthonyx bisulcatus Cope 1874 tillodont

¹Alroy 2002; ²Bown and Rose 1987