USGS locality 8204, same locality as USGS locality 8203, but 30 feet higher (Paleocene of the United States)
Where: North Dakota (48.0° N, 102.6° W: paleocoordinates 53.0° N, 79.2° W)
• coordinate based on nearby landmark
When: Fort Union Formation, Paleocene (66.0 - 56.0 Ma)
Environment/lithology: fluvial; claystone
Reposited in the USNM
Collection methods: quarrying, mechanical,
• Specimens were collected by R. W. Brown on July 24, 1931
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 58029: authorized by Peter Wilf, entered by Jocelyn Sessa on 16.01.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
• Species lists for Brown 1962 were compiled from the publication and provided for the Paleobiology Database by Drs. Steven R. Manchester and Peter R. Crane.
Show authors, comments, and common names
| Polypodiopsida | |
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Equisetum indet. Linnaeus 1753 horsetail | |