Also known as USGS locality 333, USGS locality 334, USGS locality 335, and USGS locality 8788
Where: Grand County, Colorado (40.1° N, 106.1° W: paleocoordinates 45.9° N, 85.9° W)
• coordinate based on political unit
When: 'breccia' Member (Middle Park Formation), Paleocene (66.0 - 56.0 Ma)
• 'The 'doleritic breccia' so called, Bed A of the Middle Park formation, is about 900 feet thick. It approximately underlies the Lignitic formation conformably, and rests unconformably upon the Cretaceous strata of various formations. Collections from the sandy stratum above main breccia mass.' From USGS unpublished log book, not from Brown 1962.
• member-level stratigraphic resolution
Environment/lithology: fluvial; sandy conglomerate
•'Middle Park: basal breccia and conglomerate, andesitic shales and sandstones, and thin coal seams.' From Brown 1962.
Reposited in the USNM
Collection methods: quarrying, mechanical,
• Specimens were collected by geologist L. Cannon, in the summer of 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/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 40059: authorized by Peter Wilf, entered by Jocelyn Sessa on 16.06.2004
Creative Commons license: CC BY (attribution)