Where: Montana (46.4° N, 105.8° W: paleocoordinates 52.1° N, 83.4° W)
• coordinate estimated from map
When: Fort Union Formation, Paleocene (66.0 - 56.0 Ma)
• lower Fort Union, about 50 feet below the Big Dirty coal bed - from USGS unpublished log book.
• formation-level stratigraphic resolution
Environment/lithology: fluvial; sandstone and coal
Reposited in the USNM
Collection methods: quarrying, mechanical,
• Specimens were collected by C. Smith, 1907.
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 40746: authorized by Peter Wilf, entered by Jocelyn Sessa on 29.06.2004
Creative Commons license: CC BY (attribution)