Where: Blaine County, Montana (47.8° N, 108.9° W)

• Paleocoordinates: 57.5° N, 65.2° W (Wright 2013)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by J. B. Hatcher in 1888; reposited in the USNM

Primary reference: B. Brown and E. M. Schlaikjer. 1943. A study of the troödont dinosaurs with the description of a new genus and four new species. Bulletin of the American Museum of Natural History 82(5):115-150 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 64643: authorized by Matthew Carrano, entered by Matthew Carrano on 11.09.2006

Creative Commons license: CC0 (CC0)