Also known as TNAS

Where: Dawes County, Nebraska (42.8° N, 103.1° W: paleocoordinates 44.1° N, 94.3° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Chadron Formation, Chadronian (37.2 - 33.9 Ma)

Environment/lithology: terrestrial

Primary reference: E. P. Gustafson. 1986. Transactions of the Nebraska Academy of Sciences 14 [J. Alroy/J. Alroy] more details

PaleoDB collection 16918: authorized by John Alroy, entered by John Alroy on 18.02.1993

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