Where: Sweetgrass County, Montana (45.8° N, 109.8° W: paleocoordinates 52.5° N, 86.9° W)

• coordinate based on political unit

When: "Fort Union" (= Lebo) Formation, Torrejonian (63.8 - 60.9 Ma)

Environment/lithology: terrestrial

Primary reference: G. G. Simpson. 1937. The Fort Union of the Crazy Mountain field, Montana and its mammalian faunas. Bulletin of the United States National Museum 169:1-287 [J. Alroy/J. Alroy/M. Carrano]more details

PaleoDB collection 14921: authorized by John Alroy, entered by John Alroy on 30.04.1994

Creative Commons license: CC BY (attribution)