Where: Niobrara County, Wyoming (43.0° N, 104.5° W: paleocoordinates 43.9° N, 99.4° W)

• coordinate based on political unit

When: Harrisonian (24.8 - 20.4 Ma)

Environment/lithology: terrestrial

Primary reference: T. H. V. Rich. 1981. Bulletin of the American Museum of Natural History 171(1) [J. Alroy/J. Alroy] more details

PaleoDB collection 17853: authorized by John Alroy, entered by John Alroy on 26.03.1995

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