PBDB Collection

SC-54 (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: 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: CC BY (attribution)

Taxonomic list

• meter level given by Gunnell and Gingerich 1991

Show authors, comments, and common names

Mammalia
Leptictida - Leptictidae	Didelphodus absarokae Didelphodus absarokae Cope 1881 eutherian
Cimolesta - Esthonychidae	Esthonyx spatularius Esthonyx spatularius Cope 1880 tillodont
Cimolesta - Coryphodontidae	Coryphodon sp. Coryphodon sp. Owen 1845 pantodont
Cimolesta - Apatemyidae	Apatemyidae indet.¹ Apatemyidae indet.¹ Matthew 1909 eutherian
Condylarthra - Hyopsodontidae	Hyopsodus sp. Hyopsodus sp. Leidy 1870 condylarth
Macroscelidea - Apheliscidae	Haplomylus speirianus, Apheliscus chydaeus⁴ Haplomylus speirianus Cope 1880 elephant shrew Apheliscus chydaeus⁴ Gingerich 1994 elephant shrew
Creodonta - Oxyaenidae	Dipsalidictis transiens⁷, Palaeonictis occidentalis⁷ Dipsalidictis transiens⁷ Matthew and Granger 1915 creodont Palaeonictis occidentalis⁷ Osborn 1892 creodont
Creodonta - Hyaenodontidae	Prototomus martis⁵, Arfia shoshoniensis⁵ Prototomus martis⁵ Gingerich and Deutsch 1989 creodont Arfia shoshoniensis⁵ Matthew and Granger 1915 creodont
Creodonta -	Prolimnocyon haematus n. sp.⁵ Prolimnocyon haematus n. sp.⁵ Gingerich and Deutsch 1989 creodont
Ferae -	Uintacyon cf. massetericus, Miacis sp.¹ Uintacyon cf. massetericus Cope 1882 placental Miacis sp.¹ Cope 1872 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
Procreodi - Arctocyonidae	Thryptacodon antiquus Thryptacodon antiquus Matthew and Granger 1915 condylarth
Perissodactyla - Equidae	"Hyracotherium grangeri" = Sifrhippus grangeri³ "Hyracotherium grangeri" = Sifrhippus grangeri³ Gingerich 1989 horse
Perissodactyla -	Cardiolophus radinskyi³ Cardiolophus radinskyi³ Gingerich 1991 odd-toed ungulate
Tribosphenida - Phenacodontidae	Ectocion osbornianus, Phenacodus sp.¹ Ectocion osbornianus Cope 1882 condylarth described by Thewissen 1990 Phenacodus sp.¹ Cope 1873 condylarth
Artiodactyla - Diacodexeidae	Diacodexis sp.¹ Diacodexis sp.¹ Cope 1882 even-toed ungulate
Acreodi - Mesonychidae	Pachyaena sp. Pachyaena sp. Cope 1874 condylarth
Rodentia - Ischyromyidae	Paramys sp. Paramys sp. Leidy 1871 rodent
Primates - Adapidae	Adapidae indet.¹ Adapidae indet.¹ Trouessart 1879 primate
Primates - Microsyopidae	Arctodontomys wilsoni⁶ Arctodontomys wilsoni⁶ Szalay 1969 primate
Primates - Paromomyidae	Ignacius graybullianus, Phenacolemurinae indet.¹ Ignacius graybullianus Bown and Rose 1976 primate Phenacolemurinae indet.¹ Simpson 1955 primate
Primates - Omomyidae	Teilhardina sp.² Teilhardina sp.² Simpson 1940 tarsier T. crassidens-americana intergrade
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