Also known as "Indian Mounds"

Where: Griggs County, North Dakota (47.4° N, 98.0° W: paleocoordinates 51.8° N, 63.7° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: DeGrey Member (Pierre Shale Formation), Late/Upper Campanian (83.5 - 70.6 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by P. Mack, J. Hoganson in 1996, 2002, 2004

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

Primary reference: J. W. Hoganson and B. Woodward. 2004. Skeleton of the rare giant sea turtle, Archelon, recovered from the Cretaceous DeGrey Member of the Pierre Shale near Cooperstown, Griggs County, North Dakota. North Dakota Geological Society Newsletter 32(1):1-4 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 179297: authorized by Matthew Carrano, entered by Matthew Carrano on 10.06.2016

Creative Commons license: CC BY (attribution)