USGS locality 8166, Southeast of Colstrip (Paleocene of the United States)

Where: Rosebud County, Montana (45.9° N, 106.6° W: paleocoordinates 51.7° N, 84.5° W)

• coordinate based on political unit

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

• in clinker above Upper Trail Coal

Environment/lithology: fluvial; coal

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by R.W. Brown on July 9, 1929

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 53536: authorized by Peter Wilf, entered by Jocelyn Sessa on 11.09.2005

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
Angiospermae
 Dipsacales - Caprifoliaceae
Viburnum antiquorum
 Rosales - Ulmaceae
Celtis aspera2, Chaetoptelea microphylla1
Celtis aspera2 Manchester 2014 hackberry
Chaetoptelea microphylla1 Newberry 1868 elm
1Hickey 1977; 2Manchester et al. 2002