Where: Natrona County, Wyoming (43.2° N, 107.1° W: paleocoordinates 46.9° N, 92.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Lost Cabin Member (Wind River Formation), Bridgerian (50.3 - 46.2 Ma)

• "upper gray sequence"

Environment/lithology: terrestrial

Primary reference: M. R. Dawson, L. Krishtalka, and R. K. Stucky. 1990. Revision of the Wind River faunas, early Eocene of central Wyoming. Part 9. The oldest known hystricomorphous rodent (Mammalia, Rodentia). Annals of Carnegie Museum 59(2):135-148 [J. Alroy/J. Alroy/M. Uhen]more details

PaleoDB collection 16204: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)