Where: Slope County, North Dakota (46.6° N, 103.7° W: paleocoordinates 52.7° N, 77.0° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Hell Creek Formation (Montana Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• 200 ft above local unconformity

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by A. G. Leonard in 1908; reposited in the USNM

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 191374: authorized by Matthew Carrano, entered by Matthew Carrano on 24.01.2018

Creative Commons license: CC BY (attribution)