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)