USGS locality 5579 1.5 mi east of station at Black Buttes WY, lowerFort Union Fm (Paleocene of the United States)

Where: Wyoming (41.6° N, 108.7° W: paleocoordinates 47.8° N, 88.2° W)

• coordinate based on political unit

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

• 10 feet above massive basal sandstone lower Fort Union

Environment/lithology: fluvial; siliciclastic sediments

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by F.H. Knowlton and A.C. Peale, July 26, 1909.

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 43311: authorized by Peter Wilf, entered by Jocelyn Sessa on 11.08.2004

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.
Angiospermae
 Magnoliales - Magnoliaceae
 Coniferales - Cupressaceae
Glyptostrobus nordenskioldi Chinese swamp cypress