Where: Logan County, North Dakota (46.5° N, 99.6° W: paleocoordinates 51.8° N, 72.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: paralic; poorly lithified, fine-grained sandstone

Size class: macrofossils

Collected by J. Hoganson, J. Erickson in 1999

Collection methods: bulk, sieve

• Repository: North Dakota State Fossil Collection at the North Dakota Heritage Center (State Museum)

Primary reference: J. W. Hoganson and J. M. Erickson. 2005. A new species of Ischyodus (Chondrichthyes: Holocephali: Callorhynchidae) from upper Maastrichtian shallow marine facies of the Fox Hills and Hell Creek formations, Williston Basin, North Dakota, USA. Palaeontology 48(4):709-721 [M. Carrano/M. Carrano]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 213589: authorized by Matthew Clapham, entered by Matthew Clapham on 06.09.2020

Creative Commons license: CC BY (attribution)