SC-64 (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 15758: authorized by John Alroy, entered by John Alroy on 27.09.1993

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
 Multituberculata - Neoplagiaulacidae
Ectypodus tardus, "Parectypodus simpsoni" = Ectypodus simpsoni
Ectypodus tardus Jepsen 1940 multituberculate
"Parectypodus simpsoni" = Ectypodus simpsoni Jepsen 1930 multituberculate
 Macroscelidea - Apheliscidae
Apheliscus chydaeus3 Gingerich 1994 elephant shrew
Haplomylus scottianus3 Gingerich 1994 elephant shrew
 Creodonta - Hyaenodontidae
Arfia opisthotoma4 Matthew 1901 creodont
Prototomus phobos4 Gingerich and Deutsch 1989 creodont
 Theriamorpha - Viverravidae
Viverravus acutus7 Matthew and Granger 1915 placental
 Perissodactyla - Equidae
"Hyracotherium aemulor" = Arenahippus aemulor2
"Hyracotherium aemulor" = Arenahippus aemulor2 Gingerich 1991 horse
 Perissodactyla -
Homogalax protapirinus2 Wortman 1896 odd-toed ungulate
 Rodentia - Ischyromyidae
Paramys pycnus6 Ivy 1990 rodent
 Primates - Omomyidae
Tetonius sp.1 Matthew 1915 tarsier
"matthewi-ambiguus"
 Primates - Microsyopidae
Arctodontomys nuptus5 Cope 1882 primate