Where: Powder River County, Montana (45.3° N, 105.2° W: paleocoordinates 51.9° N, 79.2° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Lance Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by E. S. Riggs

Collection methods: surface (in situ),

Primary reference: F. H. Knowlton. 1909. The stratigraphic relations and paleontology of the "Hell Creek beds," Ceratops beds" and equivalents, and their reference to the Fort Union Formation. Proceedings of the Washington Academy of Sciences 11(3):179-238 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 142753: authorized by Matthew Carrano, entered by Matthew Carrano on 16.04.2013

Creative Commons license: CC BY (attribution)