Where: Blaine County, Montana (47.9° N, 109.0° W: paleocoordinates 54.8° N, 75.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Coal Ridge Member (Judith River Formation), Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

• near top of Judith River beds

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

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

Collection methods: quarrying, surface (in situ), mechanical,

Primary reference: O. C. Marsh. 1888. A new family of horned Dinosauria, from the Cretaceous. The American Journal of Science, series 3 36:477-478 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 46123: authorized by Matthew Carrano, entered by Matthew Carrano on 04.01.2005

Creative Commons license: CC BY (attribution)