Also known as Middle Level of Sand Draw

Where: Big Horn County, Wyoming (44.7° N, 108.5° W: paleocoordinates 50.5° N, 88.0° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Fort Union Formation, Tiffanian (61.7 - 56.8 Ma)

• Earlier literature referred to this as the 'Polecat Bench Formation'

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collection methods: Princeton University collection

Primary reference: P. D. Gingerich. 1975. New North American Plesiadapidae (Mammalia, Primates) and a biostratigraphic zonation of the middle and upper Paleocene. Contributions from the Museum of Paleontology, University of Michigan 24(13):135-148 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87907: authorized by John Alroy, entered by John Alroy on 27.03.2009

Creative Commons license: CC BY (attribution)