USGS locality 541 Buck Creek, WY, upper Fort Union Fm (Paleocene of the United States)

Where: Niobrara County, Wyoming (43.8° N, 105.0° W: paleocoordinates 49.3° N, 83.5° W)

• coordinate based on political unit

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

• lower Fort Union

• formation-level stratigraphic resolution

Environment/lithology: fluvial; white sandstone and gray shale

• 'white sandstone interbedded with gray shale

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by J. B. Hatcher in 1892?

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 40083: authorized by Peter Wilf, entered by Jocelyn Sessa on 16.06.2004

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.
 Juglandales - Hamamelidae
Carya antiquorum Newberry 1868 hickory
 Rosales - Rosaceae
Prunus corrugis plum
 Fagales - Fagaceae
Castanea intermedia Lesquereux 1878 chestnut