USGS locality 318 Green Mountain, CO, Denver Fm (Paleocene of the United States)

Also known as USGS locality 318

Where: Jefferson County, Colorado (39.8° N, 105.2° W: paleocoordinates 45.5° N, 85.0° W)

• coordinate based on political unit

When: Denver Formation, Paleocene (66.0 - 56.0 Ma)

• Denver Basin

• formation-level stratigraphic resolution

Environment/lithology: fluvial; sandy claystone and shale

• 'Denver Formation: arenaceous clays, shales, basalt flows'

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by A. Lakes, in 1890.

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 39893: authorized by Peter Wilf, entered by Jocelyn Sessa on 10.06.2004

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.
Show authors, comments, and common names
Polypodiopsida
  - Polypodiaceae
Allantodiopsis erosa
Allantodiopsis erosa Lesquereux 1878
  - Blechnaceae
Woodwardia arctica
Woodwardia arctica Brown 1962
Angiospermae
 Aquifoliales - Aquifoliaceae
Ilex artocarpidioides