Where: Hill County, Montana (48.9° N, 110.6° W: paleocoordinates 56.2° N, 76.2° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial

Size class: macrofossils

Reposited in the UCMP

Primary reference: M. B. Goodwin. 1990. Morphometric landmarks of pachycephalosaurid cranial material from the Judith River Formation of northcentral Montana. In K. Carpenter and P. J. Currie (eds.), Dinosaur Systematics: Perspectives and Approaches, Cambridge University Press, Cambridge 189-201 [M. Carrano/M. Carrano/M. Carrano] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 50827: authorized by Matt Carrano, entered by Matt Carrano on 23.05.2005