Where: Dawson County, Montana (47.3° N, 106.9° W: paleocoordinates 53.1° N, 84.2° W)
• coordinate based on political unit
When: Fort Union Formation, Paleocene (66.0 - 56.0 Ma)
• 'lower Fort Union.' From Brown.
•'Light colored beds above the Laramie' From USGS unpublished log book.
• formation-level stratigraphic resolution
Environment/lithology: fluvial; siliciclastic sediments
Reposited in the USNM
Collection methods: quarrying, mechanical,
• Specimens were collected by Leonard, Holgate & Clark, Sept. 25, 1906.
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 40277: authorized by Peter Wilf, entered by Jocelyn Sessa on 21.06.2004
Creative Commons license: CC BY (attribution)