Where: Niobrara County, Wyoming (42.9° N, 104.4° W: paleocoordinates 43.9° N, 97.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Early/Lower Oligocene (33.9 - 28.4 Ma)

• "Oligocene clay" (presumably Brule equivalent, early Oligocene in modern usage)

Environment/lithology: terrestrial; claystone

Size class: macrofossils

Collected in 1924; reposited in the UMMP

Primary reference: E. C. Case. 1925. A specimen of Stylemys nebrascensis Leidy, with the skull preserved. Contributions from the Museum of Geology, University of Michigan 2(4):87-91 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 99836: authorized by John Alroy, entered by John Alroy on 24.11.2010

Creative Commons license: CC BY (attribution)