Where: Utah (39.8° N, 109.1° W: paleocoordinates 43.7° N, 95.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

Environment/lithology: lacustrine - large; lithified shale

Size class: macrofossils

Preservation: adpression

Collected by E.G. Woodruff

Primary reference: T. D. A. Cockerell. 1916. Some American fossil insects. Proceedings of the United States National Museum 51:89-106 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 124691: authorized by Matthew Clapham, entered by Matthew Clapham on 21.02.2012

Creative Commons license: CC BY (attribution)