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 -10.61, K-T section 9906
• bed-level stratigraphic resolution
Environment/lithology: "floodplain"; silty mudstone
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 45118: authorized by Matthew Carrano, entered by Matthew Carrano on 06.10.2004, edited by Roger Benson
Creative Commons license: CC BY (attribution)
Taxonomic list
Chondrichthyes | |
"Lissodus selachos" = Lonchidion selachos
"Lissodus selachos" = Lonchidion selachos Estes 1964 elasmobranch | |
Myledaphus bipartitus Cope 1876 guitarfish | |
Actinopteri | |
"Kindleia fragosa" = Cyclurus fragosus, Melvius thomasi
"Kindleia fragosa" = Cyclurus fragosus Jordan 1927 bowfin
Melvius thomasi Bryant 1987 bowfin | |
Lepisosteus occidentalis Leidy 1856 gar | |
Amphibia | |
Caudata indet. Scopoli 1777 salamander | |
Scapherpeton tectum Cope 1876 salamander
Habrosaurus dilatus Gilmore 1928 siren | |
Opisthotriton kayi Auffenberg 1961 salamander | |
Reptilia | |
Richardoestesia isosceles Sankey 2001 maniraptoran
Saurornitholestes sp. Sues 1978 maniraptoran | |
Paronychodon lacustris Cope 1876 maniraptoran | |
Caenagnathidae indet. Sternberg 1940 maniraptoran | |
Tyrannosaurus rex Osborn 1905 tyrant lizard king | |
Ceratopsidae indet. Marsh 1888 ceratopsid | |
Hadrosaurinae indet. Lambe 1918 hadrosaurine | |
"Leidyosuchus sternbergi" = Borealosuchus sternbergii
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian | |
Thoracosaurus neocesariensis De Kay 1842 crocodilian | |
Brachychampsa montana Gilmore 1911 crocodilian | |
Lepidosauria indet. Haeckel 1866 lepidosaur | |
Champsosaurus sp. Cope 1876 choristodere | |
Adocus sp. Cope 1868 turtle | |
Trionychidae indet. Gray 1825 softshell turtle | |
Basilemys sinuosa Riggs 1906 turtle | |
Chelydridae indet. Swainson 1839 turtle | |
Compsemys victa Leidy 1856 turtle | |
Baenidae indet. Cope 1882 turtle
Plesiobaena antiqua Lambe 1902 turtle | |
Mammalia | |
Theria indet. Parker and Haswell 1897 mammal |