Where: Beaverhead County, Montana (45.0° N, 112.8° W: paleocoordinates 46.9° N, 104.0° W)

• coordinate based on political unit

When: Chadronian (37.2 - 33.9 Ma)

Environment/lithology: terrestrial

Primary reference: E. Douglass. 1905. Memoirs of the Carnegie Museum 2(5) [J. Alroy/J. Alroy] more details

PaleoDB collection 16990: authorized by John Alroy, entered by John Alroy on 15.05.2002

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