PTRM V88021, Mud Buttes (Cretaceous of the United States)

Where: Bowman County, North Dakota (46.0° N, 103.8° W: paleocoordinates 52.6° N, 76.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Hell Creek Formation, Maastrichtian (72.1 - 66.0 Ma)

• datum -10.00, K-T section 9906

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; sandy siltstone

Size classes: macrofossils, mesofossils

Primary reference: D. A. Pearson, T. Schaefer, K. R. Johnson, D. J. Nichols, and J. P. Hunter. 2002. Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota. In J. H. Hartman, J. R. Johnson, and D. J. Nichols (eds.), The Hell Creek Formation and the Cretaceous-Tertiary Boundary in the Northern Great Plains: An Integrated Continental Record of the End of the Cretaceous, Geological Society of America Special Paper 361:145-167 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 45113: authorized by Matthew Carrano, entered by Matthew Carrano on 06.10.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Ceratopsidae
Ceratopsidae indet. Marsh 1888 ceratopsid
 Theropoda - Dromaeosauridae
Richardoestesia isosceles Sankey 2001 maniraptoran
 Loricata -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian
 Eosuchia -
Lepidosauria indet. Haeckel 1866 lepidosaur
 Testudines - Trionychidae
Trionychidae indet. Gray 1825 softshell turtle
Amphibia
 Proteida - Batrachosauroididae
Opisthotriton kayi Auffenberg 1961 salamander