Where: Platte County, Wyoming (42.1° N, 105.0° W: paleocoordinates 42.9° N, 101.1° W)

• coordinate based on political unit

When: "Marsland" Beds Formation, Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial

Primary reference: K. Munthe. 1981. PaleoBios 35 [J. Alroy/J. Alroy] more details

PaleoDB collection 18010: authorized by John Alroy, entered by John Alroy on 26.03.1995

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