Where: Carter County, Montana (45.5° N, 104.5° W: paleocoordinates 51.6° N, 71.5° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Judith River Formation (Montana Group), Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• "Oldman Formation"

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Preservation: soft parts

Collected by J. L. Kay in 1937; reposited in the CM

Primary reference: A. Avinoff. 1937. Vertebrate Paleontology. Fortieth Annual Report of the Carnegie Museum for the Year Ended December 31, 1937 31-34 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 142512: authorized by Matthew Carrano, entered by Matthew Carrano on 12.04.2013

Creative Commons license: CC BY (attribution)