2 1/2 miles southeast of Jim Christian Hills (Eocene of the United States)

Where: Niobrara County, Wyoming (43.0° N, 104.5° W: paleocoordinates 44.4° N, 95.8° W)

• coordinate based on political unit

When: Chadron Formation, Chadronian (37.2 - 33.9 Ma)

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collected by Skinner et al in 1963

Primary reference: R. M. Sullivan. 1979. Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae). Bulletin of the American Museum of Natural History 163(1):1-72 [P. Barrett/T. Cleary]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 181604: authorized by Paul Barrett, entered by Terri Cleary on 20.09.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Squamata - Anguidae
Helodermoides tuberculatus Douglass 1903 squamates
AMNH Frick collection no. 10160, right maxilla fragment; 10161, right dentary fragment