PBDB Collection

Elk Creek (470 m) (Eocene of the United States)

Also known as YPM 248, 251, 268

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 15544: 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
Leptictida - Leptictidae	Prodiacodon tauricinerei Prodiacodon tauricinerei Jepsen 1930 eutherian
Condylarthra - Hyopsodontidae	Hyopsodus sp. Hyopsodus sp. Leidy 1870 condylarth "loomisi/minor"
Rodentia - Ischyromyidae	cf. Mytonomys coloradensis¹, Paramys cf. excavatus cf. Mytonomys coloradensis¹ Wood 1962 rodent Paramys cf. excavatus Loomis 1907 rodent
Primates - Notharctidae	Cantius abditus¹ Cantius abditus¹ Gingerich and Simons 1977 primate
Ferae - Viverravidae	Didymictis sp., Viverravus sp. Didymictis sp. Cope 1875 placental "curtidens/lysitensis" Viverravus sp. Marsh 1872 placental "V. acutus/gracilis"
Creodonta -	Prolimnocyon atavus Prolimnocyon atavus Matthew and Granger 1915 creodont
Procreodi - Arctocyonidae	Thryptacodon antiquus Thryptacodon antiquus Matthew and Granger 1915 condylarth
Perissodactyla - Equidae	"Hyracotherium grangeri" = Sifrhippus grangeri, "Hyracotherium aemulor" = Arenahippus aemulor "Hyracotherium grangeri" = Sifrhippus grangeri Gingerich 1989 horse "H. sp. 1" "Hyracotherium aemulor" = Arenahippus aemulor Gingerich 1991 horse "H. sp. 2"
Tribosphenida - Phenacodontidae	Phenacodus vortmani Phenacodus vortmani Cope 1880 condylarth
Artiodactyla - Diacodexeidae	Diacodexis sp.¹, Bunophorus sp.¹, Bunophorus robustus¹ Diacodexis sp.¹ Cope 1882 even-toed ungulate Bunophorus sp.¹ Sinclair 1914 even-toed ungulate Bunophorus robustus¹ Sinclair 1914 even-toed ungulate
Soricomorpha - Geolabididae	Centetodon neashami n. sp.² Centetodon neashami n. sp.² Bown and Schankler 1982 placental YPM 251; "C. sp. 1/2"
Cimolesta - Esthonychidae	Esthonyx bisulcatus Esthonyx bisulcatus Cope 1874 tillodont
Cimolesta - Coryphodontidae	Coryphodon sp. Coryphodon sp. Owen 1845 pantodont "2"

¹Alroy 2002; ²Bown and Schankler 1982