Also known as Sheep Creek Quarry; Stonehouse Draw; Thompson Quarry

Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.1° N, 99.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

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

• Sheep Creek Ash is dated at 16.3 +/- 0.13 Ma (SCLF AA): MacFadden et al. 1990; Woodburne 1996a uses a date of 17.0 Ma but is simply following Tedford et al. 1987; if sample is same as KA 891 of Evernden et al. 1964, it is the No. 3 ash of Skinner et al. from the top of the middle Sheep Creek Fm.

Environment/lithology: terrestrial; lithology not reported

Collected by Albert Thomson in 1923, 1925, 1938, 1947; reposited in the AMNH

• apparently all of the pre-1934 collections from the Sheep Creek Fm. sensu stricto are from this locality

•note, however, that "Sheep Creek Quarry" is also used for Trojan Quarry

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: biostratigraphic analysis

PaleoDB collection 18001: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot and Mark Uhen

Creative Commons license: CC BY (attribution)