Where: Big Horn County, Wyoming (44.5° N, 108.0° W: paleocoordinates 49.2° N, 90.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)

Environment/lithology: terrestrial

Primary reference: D. W. Krause. 1982. Journal of Paleontology 56(2) [J. Alroy/J. Alroy] more details

PaleoDB collection 15634: authorized by John Alroy, entered by John Alroy on 21.09.1998

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)