SC-54 (Eocene of the United States)

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

• Paleocoordinates: 52.2° N, 81.1° W (Wright 2013)

• coordinate based on political unit

• small collection-level geographic resolution

When: Willwood Formation, Wasatchian (56.0 - 51.1 Ma)

Environment/lithology: terrestrial

Reposited in the UMMP

Primary reference: K. D. Rose. 1981. The Clarkforkian Land-Mammal Age and Mammalian Faunal Composition Across the Paleocene-Eocene Boundary. University of Michigan Papers on Paleontology 26:1-197 [J. Alroy/J. Alroy/P. Mannion]more details

PaleoDB collection 15756: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC0 (CC0)

Taxonomic list

• meter level given by Gunnell and Gingerich 1991
Show authors, comments, and common names
Mammalia
 Macroscelidea - Apheliscidae
Apheliscus chydaeus4, Haplomylus speirianus
Apheliscus chydaeus4 Gingerich 1994 elephant shrew
Haplomylus speirianus Cope 1880 elephant shrew
 Condylarthra - Hyopsodontidae
Hyopsodus sp.
Hyopsodus sp. Leidy 1870 condylarth
 Artiodactyla - Diacodexeidae
Diacodexis sp.1
Diacodexis sp.1 Cope 1882 even-toed ungulate
 Procreodi - Arctocyonidae
Thryptacodon antiquus
Thryptacodon antiquus Matthew and Granger 1915 condylarth
 Perissodactyla -
Cardiolophus radinskyi3
Cardiolophus radinskyi3 Gingerich 1991 odd-toed ungulate
 Perissodactyla - Equidae
"Hyracotherium grangeri" = Sifrhippus grangeri3
"Hyracotherium grangeri" = Sifrhippus grangeri3 Gingerich 1989 horse
 Tribosphenida - Phenacodontidae
Phenacodus sp.1, Ectocion osbornianus
Phenacodus sp.1 Cope 1873 condylarth
Ectocion osbornianus Cope 1882 condylarth
described by Thewissen 1990
 Acreodi - Mesonychidae
Pachyaena sp.
Pachyaena sp. Cope 1874 condylarth
 Ferae - Oxyaenidae
Palaeonictis occidentalis7, Dipsalidictis transiens7
Palaeonictis occidentalis7 Osborn 1892 placental
Dipsalidictis transiens7 Matthew and Granger 1915 placental
 Hyaenodonta - Hyaenodontidae
Prototomus martis5, Arfia shoshoniensis5
Prototomus martis5 Gingerich and Deutsch 1989 placental
Arfia shoshoniensis5 Matthew and Granger 1915 placental
 Hyaenodonta -
Prolimnocyon haematus n. sp.5
Prolimnocyon haematus n. sp.5 Gingerich and Deutsch 1989 placental
 Ferae -
Miacis sp.1, Uintacyon cf. massetericus
Miacis sp.1 Cope 1872 placental
Uintacyon cf. massetericus Cope 1882 placental
 Ferae - Viverravidae
Viverravus acutus, Didymictis leptomylus9, Didymictis protenus
Viverravus acutus Matthew and Granger 1915 placental
confirmed by Polly 1997
Didymictis leptomylus9 Cope 1880 placental
Didymictis protenus Cope 1874 placental
confirmed by Polly 1997
 Primates - Microsyopidae
Arctodontomys wilsoni6
Arctodontomys wilsoni6 Szalay 1969 primate
 Primates - Adapidae
Adapidae indet.1
Adapidae indet.1 Trouessart 1879 primate
 Primates - Omomyidae
Teilhardina sp.2
Teilhardina sp.2 Simpson 1940 tarsier
T. crassidens-americana intergrade
 Primates - Paromomyidae
Phenacolemurinae indet.1, Ignacius graybullianus
Phenacolemurinae indet.1 Simpson 1955 primate
Ignacius graybullianus Bown and Rose 1976 primate
 Rodentia - Ischyromyidae
Paramys sp.
Paramys sp. Leidy 1871 rodent
 Leptictida - Leptictidae
Didelphodus absarokae
Didelphodus absarokae Cope 1881 eutherian
 Cimolesta - Esthonychidae
Esthonyx spatularius
Esthonyx spatularius Cope 1880 tillodont
 Cimolesta - Apatemyidae
Apatemyidae indet.1
Apatemyidae indet.1 Matthew 1909 eutherian
 Cimolesta - Coryphodontidae
Coryphodon sp.
Coryphodon sp. Owen 1845 pantodont
 Multituberculata - Eucosmodontidae
"Neoliotomus ultimus" = Eucosmodon ultimus8
"Neoliotomus ultimus" = Eucosmodon ultimus8 Granger and Simpson 1928 multituberculate
1Alroy 2002; 2Bown and Rose 1987; 3Gingerich 1991; 4Gingerich 1994; 5Gingerich and Deutsch 1989; 6Gunnell 1985; 7Gunnell and Gingerich 1991; 8Krause 1982; 9Polly 1997