USGS locality 8240, bluffs of Little Missouri River, 3 miles southwest of Yule (Paleocene of the United States)

Where: Billings County, North Dakota (47.0° N, 103.0° W: paleocoordinates 52.1° N, 80.1° W)

• coordinate based on political unit

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

• Ludlow Lignitic member of the Lance

Environment/lithology: fluvial; coal

• Lignite

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by T. W. Stanton, R. W. Brown, J. Murata on July 30, 1931

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 58086: authorized by Peter Wilf, entered by Jocelyn Sessa on 17.01.2006

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
 Equisetales - Equisetidae
Equisetum indet. Linnaeus 1753 horsetail
stems with sheaths
Angiospermae
 Vitales - Vitaceae
Ampelopsis acerifolia Newberry 1868
 Trochodendrales - Trochodendraceae
Nordenskioldia borealis Heer 1870
seed
 Coniferales - Cupressaceae
Metasequoia occidentalis Chaney 1951 dawn redwood