Where: Sioux County, Nebraska (42.2° N, 103.8° W: paleocoordinates 42.9° N, 99.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: middle Member (Sheep Creek Formation), Late/Upper Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial; massive, gray sandstone

Size class: macrofossils

Collected by Skinner and party in 1947; reposited in the AMNH

• Discovered by Skinner and party in August, 1947, after a torrential rain had washed out a gully at the extreme head of Stonehouse Draw and exposed the fossil concentration.

Primary reference: M. F. Skinner, S. M. Skinner, and R. J. Gooris. 1977. Stratigraphy and biostratigraphy of late Cenozoic deposits in central Sioux County, western Nebraska. Bulletin of the American Museum of Natural History 158(5):263-370 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 183502: authorized by Jonathan Marcot, entered by Jonathan Marcot on 01.01.2017

Creative Commons license: CC BY (attribution)