USGS locality 4334, Sentinel Butte, ND, lower Fort Union Fm Sentinel Butte Mb (Paleocene of the United States)

Where: North Dakota (46.9° N, 103.8° W: paleocoordinates 52.2° N, 81.0° W)

• coordinate based on political unit

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

• formation-level stratigraphic resolution

Environment/lithology: fluvial; coal

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by Knowlton & Peale, July 15, 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 40533: authorized by Peter Wilf, entered by Jocelyn Sessa on 24.06.2004

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.