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.
 Polypodiales - Blechnaceae
Woodwardia arctica Brown 1962
 Theales - Dilleniidae
Allantodiopsis erosa
Allantodiopsis erosa Knowlton 1919