Where: Morton County, North Dakota (46.9° N, 101.5° W: paleocoordinates 52.6° N, 74.4° W)
• coordinate based on political unit
• outcrop-level geographic resolution
When: Breien Member (Hell Creek Formation), Lancian (70.6 - 66.0 Ma)
• 3 m above base at site
• bed-level stratigraphic resolution
Environment/lithology: coastal; sandstone
Size classes: macrofossils, mesofossils
Preservation: mold/impression
Collected by J. Hoganson
Collection methods: surface (float), surface (in situ),
Primary reference: J. W. Hoganson, J. M. Campbell, and E. C. Murphy. 1994. Stratigraphy and paleontology of the Cretaceous Hell Creek Formation, Stumpf site, Morton County, North Dakota. Proceedings of the North Dakota Academy of Sciences 48:95 [J. Alroy/J. Alroy/M. Carrano]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 53234: authorized by John Alroy, entered by John Alroy on 07.09.2005
Creative Commons license: CC BY (attribution)
Taxonomic list
Actinopteri | |
Enchodus sp. Agassiz 1835 | |
Reptilia | |
Crocodylia indet. crocodilian | |
Chondrichthyes | |
Ischyodus sp. Egerton 1843 plownose chimaera
Elasmodus sp. Egerton plownose chimaera | |
Myledaphus bipartitus Cope 1876 guitarfish | |
? Scapanorhynchus sp. Woodward 1889 goblin shark | |
Carcharias sp. Rafinesque 1810 sand shark | |
Bivalvia | |
Modiolus cf. galpinianus mussel | |
? Inoceramus sp. Sowerby 1814 clam | |
Crassostrea sp. Sacco 1897 oyster | |
Ophiomorpha sp. Lundgren 1891 |