Where: Slope County, North Dakota (46.3° N, 103.9° W: paleocoordinates 52.5° N, 77.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Hell Creek Formation (Montana Group), Lancian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: channel lag; fine-grained, yellow, silty sandstone

Size class: macrofossils

Collected by North Dakota Heritage Center State Museum in 2007

Primary reference: G. P. Wilson, E. G. Ekdale, J. W. Hoganson, J. J. Calede, and A. Vander Linden. 2016. A large carnivorous mammal from the Late Cretaceous and the North American origin of marsupials. Nature Communications 7:13734:1-10 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 183291: authorized by Philip Mannion, entered by Philip Mannion on 09.12.2016

Creative Commons license: CC BY (attribution)