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