Where: North Dakota (46.9° N, 103.5° W: paleocoordinates 52.1° N, 80.7° W)
• coordinate based on political unit
When: Fort Union Formation, Paleocene (66.0 - 56.0 Ma)
• upper Fort Union.
• formation-level stratigraphic resolution
Environment/lithology: fluvial; shelly/skeletal, gray, white, cherty/siliceous sandstone and coal
Reposited in the USNM
Collection methods: quarrying, mechanical,
• Specimens were collected by Hayden and Peale, August 3, 1883.
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 40124: authorized by Peter Wilf, entered by Jocelyn Sessa on 18.06.2004
Creative Commons license: CC BY (attribution)