PBDB Collection

North Fork of the Shoshone River (NF-1) (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, Lostcabinian (54.9 - 50.5 Ma)

• said to be Lostcabinian

Environment/lithology: terrestrial

Primary reference: G. F. Gunnell, W. S. Bartels, P. D. Ginberich and V. Torres. 1992. Wapiti Valley Faunas: Early and Middle Eocene Fossil Vertebrates from the North Fork of the Shoshone River, Park County, Wyoming. Contributions from the Museum of Paleontology, University of Michigan 28(11):247-287 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 15997: authorized by John Alroy, entered by John Alroy on 30.04.1994, edited by Patricia Holroyd

Creative Commons license: CC0 (CC0)

Taxonomic list

• stratigraphic level is unclear; Torres 1985 places it at 80 meters, but Gunnell et al. correlate it at above 100 m without giving details

Show authors, comments, and common names

Reptilia
Crocodylia - Alligatoridae	Allognathosuchus sp.² Allognathosuchus sp.² Mook 1921 crocodilian
Testudines - Geoemydidae	Echmatemys wyomingensis² Echmatemys wyomingensis² Leidy 1870 turtle
Mammalia
Condylarthra - Hyopsodontidae	Hyopsodus sp.¹ Hyopsodus sp.¹ Leidy 1870 condylarth
Primates - Omomyidae	Loveina wapitiensis Loveina wapitiensis Gunnell et al. 1992 tarsier
Primates - Microsyopidae	Microsyops scottianus Microsyops scottianus Cope 1881 primate
Artiodactyla - Diacodexeidae	Bunophorus sinclairi, Diacodexis cf. secans Bunophorus sinclairi Guthrie 1966 even-toed ungulate Diacodexis cf. secans Cope 1881 even-toed ungulate
Perissodactyla - Equidae	Xenicohippus cf. craspedotum¹, "Protorohippus cf. venticolus" = Protorohippus venticolum¹ Xenicohippus cf. craspedotum¹ Cope 1880 horse "Protorohippus cf. venticolus" = Protorohippus venticolum¹ Cope 1881 horse
Perissodactyla - Brontotheriidae	Lambdotherium popoagicum Lambdotherium popoagicum Cope 1880 brontothere
Tribosphenida - Phenacodontidae	Phenacodus vortmani, Phenacodus intermedius Phenacodus vortmani Cope 1880 condylarth Phenacodus intermedius Granger 1915 condylarth
Cimolesta - Esthonychidae	Esthonyx cf. acutidens Esthonyx cf. acutidens Cope 1881 tillodont

¹Alroy 2002; ²Torres 1985