Where: Blaine County, Montana (48.0° N, 108.9° W: paleocoordinates 54.9° N, 74.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Judith River Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• Uppermost member of Judith River Formation

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified sandstone

Size class: macrofossils

Collected by M. Siverson in 1988

• Repository: Lund University

Primary reference: M. Siverson. 1995. Revision of Cretorectolobus (Neoselachii) and description of Cederstroemia n. gen., a Cretaceous carpet shark (Orectolobiformes) with a cutting dentition. Journal of Paleontology 69:974-979 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 215798: authorized by Matthew Clapham, entered by Matthew Clapham on 22.11.2020

Creative Commons license: CC BY (attribution)