Elk Creek (130 m) (Eocene of the United States)

Also known as YPM 305; USGS D-1190

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

• coordinate based on political unit

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

Environment/lithology: terrestrial

Primary reference: D. M. Schankler. 1980. University of Michigan Papers on Paleontology 24 [J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 15509: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Kinosternoidea
Baltemys staurogastros3 Hutchison 1991 mud turtle
 Testudines - Panemydidae
Psilosemys wyomingensis4 Hutchison 2013 turtle
Mammalia
 Primates - Microsyopidae
Microsyopidae indet.1 Osborn and Wortman 1892 primate
 Primates - Omomyidae
Teilhardina sp.2 Simpson 1940 tarsier
T. crassidens-americana intergrade; USGS D-1190
 Primates - Notharctidae
Cantius sp.1 Simons 1962 primate
 Primates - Paromomyidae
Phenacolemurinae indet.1 Simpson 1955 primate
 Cimolesta - Pantolestidae
Palaeosinopa lutreola Matthew 1918 eutherian
 Rodentia - Ischyromyidae
Paramys cf. copei Loomis 1907 rodent
 Perissodactyla - Equidae
"Hyracotherium grangeri" = Sifrhippus grangeri
"Hyracotherium grangeri" = Sifrhippus grangeri Gingerich 1989 horse
"H. sp. 1"
 Creodonta - Oxyaenidae
Oxyaena gulo Matthew and Granger 1915 creodont
 Ferae - Viverravidae
Didymictis leptomylus Cope 1880 placental
 Macroscelidea - Apheliscidae
Haplomylus speirianus Cope 1880 elephant shrew
 Taeniodonta - Stylinodontidae
Ectoganus gliriformis1 Cope 1874 taeniodont
 Trogontia - Esthonychidae
Esthonyx spatularius Cope 1880 tillodont
 Ungulata - Hyopsodontidae
Hyopsodus sp. Leidy 1870 condylarth
"loomisi/minor"
 Ungulata - Diacodexeidae
Diacodexis sp.1 Cope 1882 even-toed ungulate
 Ungulata - Phenacodontidae
Phenacodus intermedius Granger 1915 condylarth
Phenacodus vortmani Cope 1880 condylarth