Also known as USGS localities 317, 320, 322, 324, and 8063

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

•'Leaves were found in an outcrop 50 feet above drab-green sandy beds containing the highest dinosaur remains.'

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; sandy claystone

Reposited in the USNM

Collection methods: quarrying, mechanical,

• 'Specimens were collected by A. Lakes in June 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 39899: authorized by Peter Wilf, entered by Jocelyn Sessa on 11.06.2004

Creative Commons license: CC BY (attribution)