Where: Slope County, North Dakota (46.4° N, 103.9° W: paleocoordinates 52.6° 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 -3.40, K-T section 86148
• bed-level stratigraphic resolution
Environment/lithology: "floodplain"; carbonaceous shale
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 45381: authorized by Matthew Carrano, entered by Matthew Carrano on 20.10.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Trionychidae indet. Gray 1825 softshell turtle | |
Adocus sp. Cope 1868 turtle | |
Basilemys sinuosa Riggs 1906 turtle | |
Helopanoplia distincta Hay 1908 turtle | |
Compsemys victa Leidy 1856 turtle | |
Plesiobaena antiqua Lambe 1902 turtle | |
Lepidosauria indet. Haeckel 1866 lepidosaur | |
Champsosaurus sp. Cope 1876 choristodere | |
Ornithomimidae indet. Marsh 1890 ornithomimid | |
Tyrannosaurus rex Osborn 1905 tyrant lizard king | |
Caenagnathidae indet. Sternberg 1940 maniraptoran | |
Aves | |
Aves indet. Linnaeus 1758 bird | |
Reptilia | |
"Coelurosauridae indet." = Coeluridae
"Coelurosauridae indet." = Coeluridae Marsh 1881 coelurid | |
Ceratopsidae indet. Marsh 1888 ceratopsid | |
Brachychampsa montana Gilmore 1911 crocodilian | |
Thoracosaurus neocesariensis De Kay 1842 crocodilian | |
"Leidyosuchus sternbergi" = Borealosuchus sternbergii
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian | |
Amphibia | |
Caudata indet. salamander | |
Actinopteri | |
Melvius thomasi, "Kindleia fragosa" = Cyclurus fragosus
Melvius thomasi Bryant 1987 bowfin
"Kindleia fragosa" = Cyclurus fragosus Jordan 1927 bowfin | |
Lepisosteus occidentalis Leidy 1856 gar |