Where: Garfield County, Montana (47.6° N, 107.0° W: paleocoordinates 54.4° N, 80.1° W)

• coordinate based on political unit

When: Hell Creek Formation, Lancian (70.6 - 65.5 Ma)

Environment/lithology: terrestrial

Primary reference: R. E. Sloan and L. Van Valen. 1965. Cretaceous mammals from Montana. Science 148(3667):220-227 [J. Alroy/J. Alroy/J. Alroy] more details

PaleoDB collection 14594: authorized by John Alroy, entered by John Alroy on 18.02.1993

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