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 | |
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