Where: Colorado (40.0° N, 108.1° W: paleocoordinates 43.8° N, 94.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

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

Environment/lithology: lacustrine - large; lithified mudstone

Size class: mesofossils

Preservation: adpression

Collected by D.E. Winchester in 9, 1914

Primary reference: T. D. A. Cockerell. 1917. New Tertiary Insects. Proceedings of the United States National Museum 52:373-384 [C. Labandeira/C. Labandeira/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 124625: authorized by Matthew Clapham, entered by Matthew Clapham on 20.02.2012

Creative Commons license: CC BY (attribution)