USGS locality 4474, head of Polecat Creek, WY, middle Fort Union Fm (Paleocene of the United States)

Where: Big Horn County, Wyoming (44.4° N, 107.6° W: paleocoordinates 50.4° N, 86.1° W)

• coordinate estimated from map

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

• middle Fort Union

• formation-level stratigraphic resolution

Environment/lithology: fluvial; siliciclastic sediments

• no lithologic information is given.

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by H.P. Little, Aug. 5, 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/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 40670: authorized by Peter Wilf, entered by Jocelyn Sessa on 27.06.2004

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.
Show authors, comments, and common names
Polypodiopsida
 Equisetales - Equisetidae
Equisetum sp.
Equisetum sp. Linnaeus 1753 horsetail