Where: Montana (46.8° N, 105.3° W: paleocoordinates 52.4° N, 82.7° W)

• coordinate based on political unit

When: Fort Union Formation, Paleocene (66.0 - 56.0 Ma)

• 25 feet above Big Dirty coal

Environment/lithology: fluvial; siliciclastic sediments

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Collected by R. W. Brown, F. S. MacNeill, Aug. 12, 1936

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 53940: authorized by Peter Wilf, entered by Jocelyn Sessa on 18.09.2005

Creative Commons license: CC BY (attribution)