Where: Harding County, South Dakota (45.5° N, 103.1° W: paleocoordinates 46.6° N, 94.7° W)

• coordinate based on political unit

When: Orellan (33.9 - 33.3 Ma)

Environment/lithology: terrestrial

Collection methods: surface (float)

Primary reference: J. A. Lillegraven. 1970. Geological Society America Bulletin 81 [J. Alroy/J. Alroy] more details

PaleoDB collection 17186: authorized by John Alroy, entered by John Alroy on 18.02.1993

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