Also known as USGS locality 336
Where: Grand County, Colorado (40.1° N, 106.1° W: paleocoordinates 45.9° N, 85.9° W)
• coordinate based on political unit
When: Middle Park Formation, Paleocene (66.0 - 56.0 Ma)
• 'The horizon is about on a line between the Lignite series and the dark sandstones formed by the eruption debris from breccia beds.'
• group of beds-level stratigraphic resolution
Environment/lithology: fluvial; micaceous sandstone and shale
Reposited in the USNM
Collection methods: quarrying, mechanical,
• Specimens were collected by geologist L. Cannon, in the summer of Summer 1889.
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/J. Sessa]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 40060: authorized by Peter Wilf, entered by Jocelyn Sessa on 16.06.2004
Creative Commons license: CC BY (attribution)