Where: Jefferson County, Montana (45.9° N, 112.3° W: paleocoordinates 47.7° N, 103.4° W)

• coordinate stated in text

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

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Collected by Gilmore in 1931

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 181607: authorized by Paul Barrett, entered by Terri Cleary on 20.09.2016

Creative Commons license: CC BY (attribution)