Where: Colorado (38.8° N, 108.3° W: paleocoordinates 42.6° N, 94.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Green River Formation, Bridgerian (50.3 - 46.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified shale

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Collected by Winchester; reposited in the USNM

Primary reference: T. D. A. Cockerell. 1921. Eocene Insects from the Rocky Mountains. Proceedings of the United States National Museum 57:233-260 [C. Labandeira/C. Labandeira/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121193: authorized by Matthew Clapham, entered by Jered Karr on 30.11.2011

Creative Commons license: CC BY (attribution)