ammonites
USGS localities 6428, North of Coalbank in Big Ditch, Ferris Fm? (Paleocene of the United States)

Where: Walcott Quadrangle County, Wyoming (42.0° N, 106.8° W: paleocoordinates 47.7° N, 86.6° W)

• coordinate estimated from map

When: Ferris? Formation, Paleocene (65.5 - 55.8 Ma)

• These collections have no statrigraphic information; I am placing them in the Ferris Fm because they are close to a locality in the Ferris Fm.

Environment/lithology: fluvial; siliciclastic sediments

Reposited in the USNM

Collection methods: quarrying, mechanical,

• Specimens were collected by A.L. Buckly on October 14, 1912.

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 57945: authorized by Peter Wilf, entered by Jocelyn Sessa on 11.01.2006