USGS locality 6084, 20 mi above Hampshire on Black Thunder Creek, Fort Union Fm (Paleocene of the United States)

Where: Wyoming (43.6° N, 104.9° W: paleocoordinates 49.2° N, 83.4° W)

• coordinate estimated from map

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

Environment/lithology: fluvial; siliciclastic sediments

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by V.H. Barnett on Sept. 9, 1911.

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 57936: authorized by Peter Wilf, entered by Jocelyn Sessa on 10.01.2006

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.
Polypodiopsida
 Schizaeales - Polypodiidae
Anemia elongata Newberry 1863
 Polypodiales - Polypodiidae
Dennstaedtia americana Knowlton 1910