Waltman (Eocene of the United States)

Also known as Keefer Collection U

Where: Natrona County, Wyoming (43.2° N, 107.1° W: paleocoordinates 47.8° N, 90.2° W)

• coordinate based on political unit

When: Lost Cabin Member (Wind River Formation), Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Primary reference: W. R. Keefer. 1965. Stratigraphy and geologic history of the uppermost Cretaceous, Paleocene, and Lower Eocene rocks in the Wind River Basin, Wyoming. United States Geological Survey Professional Paper 495-A:A1-A77 [J. Alroy/J. Alroy/M. Carrano]more details

PaleoDB collection 16074: authorized by John Alroy, entered by John Alroy on 30.04.1994

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Condylarthra - Hyopsodontidae
Hyopsodus wortmani, Hyopsodus mentalis
Hyopsodus wortmani Osborn 1902 condylarth
Hyopsodus mentalis Cope 1875 condylarth
 Perissodactyla - Brontotheriidae
Lambdotherium popoagicum
Lambdotherium popoagicum Cope 1880 brontothere
 Perissodactyla - Equidae
Equidae indet.
Equidae indet. Gray 1821 horse
 Primates - Notharctidae
cf. Cantius nunienus
cf. Cantius nunienus Cope 1881 primate
 Primates - Microsyopidae
Microsyops sp.
Microsyops sp. Leidy 1872 primate
 Theriamorpha - Leptictidae
cf. Didelphodus sp., cf. Palaeictops sp.
cf. Didelphodus sp. Cope 1882 eutherian
cf. Palaeictops sp. Matthew 1899 eutherian