Where: Mesa County, Colorado (39.6° N, 108.0° W: paleocoordinates 43.4° N, 94.5° W)

• coordinate based on political unit

• small collection-level geographic resolution

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

Environment/lithology: lacustrine - large; lithified shale

Size classes: macrofossils, mesofossils

Preservation: adpression

Collected by John Byram in 1922; reposited in the USNM

Primary reference: T. D. A. Cockerell. 1922. An ancient wasp. Nature 110:313 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122751: authorized by Matthew Clapham, entered by Matthew Clapham on 05.01.2012

Creative Commons license: CC BY (attribution)