Where: Ilo quadrangle County, Wyoming (43.9° N, 108.5° W: paleocoordinates 50.0° N, 87.3° W)

• coordinate based on political unit

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

• 30' below base of Basal Fort Union sandstone

Environment/lithology: fluvial; siliciclastic sediments

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by D.F. Hewett on October 3, 1913.

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 57957: authorized by Peter Wilf, entered by Jocelyn Sessa on 11.01.2006

Creative Commons license: CC BY (attribution)