Where: Montana (48.0° N, 106.3° W)

• Paleocoordinates: 57.0° N, 62.0° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bearpaw Formation, Late/Upper Campanian (83.6 - 72.2 Ma)

• Unit 6, middle part

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified shale

Size class: macrofossils

Reposited in the USNM

Primary reference: F. S. Jensen and H. D. Varnes. 1964. Geology of the Fort Peck area, Garfield, McCone and Valley counties, Montana. United States Geological Survey Professional Paper 414-F:1-49 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 213001: authorized by Matthew Clapham, entered by Matthew Clapham on 23.08.2020

Creative Commons license: CC0 (CC0)