Where: Montana (46.9° N, 105.4° W: paleocoordinates 52.3° N, 83.3° W)

• coordinate estimated from map

When: Lebo Member (Fort Union Formation), Paleocene (65.5 - 55.8 Ma)

• Near contact of Lebo and Tongue River members.

Environment/lithology: fluvial; siliciclastic sediments

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Collected by R. W. Brown, F. S. MacNeill on Aug. 13, 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/J. Sessa] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 53942: authorized by Peter Wilf, entered by Jocelyn Sessa on 18.09.2005