West of Rifle, locality 41226 (Eocene of the United States)

Where: Colorado (39.5° N, 108.0° W: paleocoordinates 43.3° N, 94.5° 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 lime mudstone

• Laramide-style block faulting

Size class: macrofossils

Preservation: adpression

Collected by D. Kohls; reposited in the USNM

Primary reference: S. R. Davis and M. S. Engel. 2010. Antiquity and evolution of prosternal horns in Baridine weevils (Coleoptera: Curculionidae). Journal of Paleontology 84:918-926 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 156240: authorized by Matthew Clapham, entered by Matthew Clapham on 14.05.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Coleoptera - Curculionidae
Baridinae "indet. 2"
Baridinae "indet. 2" Schoenherr 1836 snout beetle
USNM specimen #693
 Orthoptera - Eumastacidae
Eoerianthus eocaenicus
Eoerianthus eocaenicus Gorochov 2012 monkey grasshopper
USNM Kohls 652-AB
 Orthoptera - Tetrigidae
Eotetrix unicornis
Eotetrix unicornis Gorochov 2012 pygmy grasshopper
USNM Kohls 18689