USGS locality 2420, 30 miles south of Glendive, MT, middle Fort Union Fm (Paleocene of the United States)

Where: Montana (47.1° N, 104.7° W: paleocoordinates 52.5° N, 81.9° W)

• coordinate based on political unit

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

• middle Fort Union

• formation-level stratigraphic resolution

Environment/lithology: fluvial; carbonaceous shale

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by C. A. White, August 17, 1882

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 40098: authorized by Peter Wilf, entered by Jocelyn Sessa on 17.06.2004

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.
Hydromystria expansa
aquatic creeper or floater
 Pinales - Taxodiaceae
Metasequoia occidentalis Chaney 1951 dawn redwood
  - Selaginellaceae
Selaginella collieri Knowlton 1916
  - Isoetaceae
Isoetites horridus Dawson 1883
corm with rosette of leaves
 Rhamnales - Rosidae
 Magnoliales - Magnoliaceae
 Saxifragales - Cercidiphyllaceae
 Myrtales - Trapaceae
Trapa angulata Brown 1962
 Sapindales - Aceraceae
 Proteales - Platanaceae
Lindera obtusata Brown 1962
Nordenskioldia borealis Heer 1870
Beringiaphyllum cupanioides
Beringiaphyllum cupanioides Manchester et al. 1999
Preissites wardii
Preissites wardii Knowlton 1894