Where: Bowman County, North Dakota (46.0° N, 103.8° W: paleocoordinates 52.2° N, 77.3° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• datum -12.00, 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 45110: authorized by Matthew Carrano, entered by Matthew Carrano on 06.10.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Amphibia | |
Scapherpeton tectum Cope 1876 salamander | |
Reptilia | |
Ceratopsidae indet. Marsh 1888 ceratopsid | |
Hadrosaurinae indet. Lambe 1918 hadrosaurine | |
Richardoestesia isosceles Sankey 2001 maniraptoran | |
Aves | |
Aves indet. Linnaeus 1758 bird | |
Reptilia | |
Brachychampsa montana Gilmore 1911 crocodilian | |
"Leidyosuchus sternbergi" = Borealosuchus sternbergii
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian | |
Champsosaurus sp. Cope 1876 choristodere | |
Lepidosauria indet. Haeckel 1866 lepidosaur | |
Trionychidae indet. Gray 1825 softshell turtle | |
Chelydridae indet. Swainson 1839 turtle | |
Compsemys victa Leidy 1856 turtle | |
Actinopteri | |
"Kindleia fragosa" = Cyclurus fragosus
"Kindleia fragosa" = Cyclurus fragosus Jordan 1927 bowfin | |
Lepisosteus occidentalis Leidy 1856 gar | |
Chondrichthyes | |
Myledaphus bipartitus Cope 1876 guitarfish |