Where: Moffat County, Wyoming (40.8° N, 108.9° W: paleocoordinates 45.8° N, 74.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Mancos Shale Formation, Santonian (86.3 - 83.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Mancos Fm, which overlies the Dakota Sandstone, and is overlain by the Iles Fm of the Mesaverde Group. AGE: Albian-Coniacian for entire formation. Here assigned to Santonian on the basis of ammonoid and bivalve biostratigraphy (by enterer). STRATIGRAPHIC POSITION: From top of Vermilion Creek section, at 5224 ft above base of section.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, gray shale

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Reeside; reposited in the USNM

Collection methods: surface (in situ),

• COLLECTOR: J. B. Reeside. REPOSITORY: Presumably USNM of USGS.

Primary reference: J. B. Reeside. 1955. Revised interpretation of the Cretaceous section on Vermilion Creek, Moffat County, Colorado. Wyoming Geological Association Guidebook - 1955 85-88 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 87786: authorized by Austin Hendy, entered by Austin Hendy on 24.03.2009

Creative Commons license: CC BY (attribution)