Where: Dawson County, Montana (47.1° N, 104.7° W: paleocoordinates 53.6° N, 77.2° W)

• coordinate based on nearby landmark

When: Hell Creek Formation, Maastrichtian (72.1 - 66.0 Ma)

Environment/lithology: fluvial; lithology not reported

Size classes: macrofossils, mesofossils

Reposited in the USNM

Primary reference: R. W. Brown. 1962. Paleocene flora of the Rocky Mountains and Great Plains. United States Geological Survey Professional Paper 375:1-119 [P. Wilf/J. Sessa/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 194864: authorized by Paul Barrett, entered by Terri Cleary on 03.07.2018

Creative Commons license: CC BY (attribution)