NDSFC Loc. EM6 (Cretaceous of the United States)

Where: Emmons County, North Dakota (46.5° N, 100.4° W: paleocoordinates 52.0° N, 73.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: mesofossils

Collected by J. Hoganson & J. Erickson in 1999

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: taxonomic analysis

PaleoDB collection 179288: authorized by Matthew Carrano, entered by Matthew Carrano on 10.06.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Chimaeriformes - Callorhynchidae
Ischyodus cf. rayhaasi Hoganson and Erickson 2005 plownose chimaera
ND 99-23.1, L mandible