Where: Jackson County, South Dakota (43.5° N, 101.9° W: paleocoordinates 44.4° N, 94.3° W)

• coordinate based on political unit

When: upper Poleslide Member, Whitneyan (33.3 - 30.8 Ma)

• Leptauchenia Clays

Environment/lithology: terrestrial

Primary reference: R. W. Wilson. 1985. Journal of Paleontology 59(3) [J. Alroy/J. Alroy] more details

PaleoDB collection 17317: authorized by John Alroy, entered by John Alroy on 26.03.1995

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