Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.6° N, 95.7° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Orella Member (Brule Formation), Orellan (33.9 - 33.3 Ma)

Environment/lithology: terrestrial

Primary reference: J. A. Lillegraven et al. 1981. University of Wyoming Publication 45 [J. Alroy/J. Alroy] more details

PaleoDB collection 17159: authorized by John Alroy, entered by John Alroy on 15.05.2002

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