North Fork of the Shoshone River (NF-4) (Eocene of the United States)

Where: Park County, Wyoming (44.3° N, 109.0° W: paleocoordinates 48.1° N, 94.6° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Aycross Formation, Bridgerian (50.3 - 46.2 Ma)

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 16289: authorized by John Alroy, entered by John Alroy on 30.04.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

• level is approximate
said to be Bridger B
Mammalia
 Primates - Omomyidae
"Washakius laurae" = Washakius insignis
"Washakius laurae" = Washakius insignis Leidy 1873 tarsier
 Primates - Notharctidae
Smilodectes gracilis Marsh 1871 primate
 Rodentia - Sciuravidae
Knightomys cf. depressus Loomis 1907 rodent
Knightomys cf. huerfanensis Wood 1962 rodent
 Rodentia - Ischyromyidae
Pseudotomus cf. robustus Marsh 1872 rodent
Paramys copei Loomis 1907 rodent
 Rodentia - Paramyidae
Reithroparamyinae indet. Wood 1962 rodent
 Trogontia - Esthonychidae
Trogosus latidens Marsh 1874 tillodont
 Ungulata - Hyopsodontidae
Hyopsodus minusculus Leidy 1873 condylarth