SC-38 (Eocene of the United States)

Where: Park County, Wyoming (44.3° N, 109.0° W: paleocoordinates 49.2° N, 91.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

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

Environment/lithology: terrestrial

Reposited in the UMMP

Primary reference: D. W. Krause. 1982. Multituberculates from the Wasatchian Land-Mammal Age, Early Eocene, of Western North America. Journal of Paleontology 56(2):271-294 [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 15747: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• meter level based on Bown and Rose 1987: 1520 m added to their figure, which is from the base of the Willwood
Mammalia
 Creodonta - Hyaenodontidae
Acarictis ryani4 Gingerich and Deutsch 1989 creodont
 Theriamorpha - Viverravidae
Viverravus acutus6 Matthew and Granger 1915 placental
 Perissodactyla - Equidae
"Arenahippus grangeri" = Sifrhippus grangeri2
"Arenahippus grangeri" = Sifrhippus grangeri2 Gingerich 1989 horse
 Perissodactyla -
Cardiolophus radinskyi3 Gingerich 1991 odd-toed ungulate
 Primates - Omomyidae
Teilhardina americana1 Bown 1976 tarsier
 Primates - Microsyopidae
Arctodontomys wilsoni5 Szalay 1969 primate
 Multituberculata - Neoplagiaulacidae
Ectypodus tardus Jepsen 1940 multituberculate
 Multituberculata - Eucosmodontidae
"Neoliotomus ultimus" = Eucosmodon ultimus
"Neoliotomus ultimus" = Eucosmodon ultimus Granger and Simpson 1928 multituberculate