PBDB Collection

Elk Creek (170 m) (Eocene of the United States)

Also known as YPM 89, 91, 389

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

• Paleocoordinates: 52.2° N, 79.9° W (Wright 2013)

• 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 15513: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names

Mammalia
Macroscelidea - Apheliscidae	Haplomylus speirianus Haplomylus speirianus Cope 1880 elephant shrew
Condylarthra - Hyopsodontidae	Hyopsodus sp. Hyopsodus sp. Leidy 1870 condylarth "loomisi/minor"
Ferae - Metacheiromyidae	Palaeanodon ignavus Palaeanodon ignavus Matthew 1918 placental
Ferae -	Miacis sp.¹ Miacis sp.¹ Cope 1872 placental
Ferae - Viverravidae	Didymictis leptomylus Didymictis leptomylus Cope 1880 placental
Creodonta - Oxyaenidae	Oxyaena gulo⁴ Oxyaena gulo⁴ Matthew and Granger 1915 creodont at YM 389
Creodonta - Hyaenodontidae	Prototomus sp., Arfia shoshoniensis³ Prototomus sp. Cope 1874 creodont "1" Arfia shoshoniensis³ Matthew and Granger 1915 creodont
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
Primates - Notharctidae	Cantius sp.¹ Cantius sp.¹ Simons 1962 primate
Primates - Omomyidae	Tetonius matthewi² Tetonius matthewi² Bown and Rose 1987 tarsier Y-389
Rodentia - Ischyromyidae	Paramys cf. copei Paramys cf. copei Loomis 1907 rodent
Cimolesta - Esthonychidae	Esthonyx spatularius Esthonyx spatularius Cope 1880 tillodont
Cimolesta - Coryphodontidae	Coryphodon sp. Coryphodon sp. Owen 1845 pantodont "1"

¹Alroy 2002; ²Bown and Rose 1987; ³Gingerich and Deutsch 1989; ⁴Gunnell and Gingerich 1991