Where: Bowman County, North Dakota (45.9° N, 104.0° W: paleocoordinates 52.2° N, 77.5° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• datum -81.68, K-T section 9906
• bed-level stratigraphic resolution
Environment/lithology: "channel"; sandstone
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 45099: 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 | |
Osteichthyes | |
| |
Amphibia | |
Caudata indet. salamander | |
Scapherpeton tectum Cope 1876 salamander | |
Mammalia | |
Mammalia indet. mammal | |
? Multituberculata indet. Cope 1884 multituberculate | |
Meniscoessus sp. Cope 1882 multituberculate
? Meniscoessus sp. Cope 1882 multituberculate
Meniscoessus robustus Marsh 1889 multituberculate | |
Cimolodon nitidus Marsh 1889 multituberculate | |
Mesodma thompsoni Clemens 1964 multituberculate | |
Marsupialia indet. marsupial | |
Theria indet. Parker and Haswell 1897 mammal | |
"Pediomys florencae" = Protolambda florencae
"Pediomys florencae" = Protolambda florencae Clemens 1966 metatherian | |
Didelphodon vorax Marsh 1889 metatherian | |
Alphadon marshi Simpson 1927 metatherian | |
Reptilia | |
Compsemys victa Leidy 1856 turtle | |
Baenidae indet. Cope 1882 turtle
Boremys sp. Lambe 1906 turtle PTRM 2944, neural 7?; PTRM 9406, neural fragment; PTRM 9800, costal 6? fragment; and PTRM 16155, costal fragment
Plesiobaena antiqua Lambe 1902 turtle | |
Chelydridae indet. Swainson 1839 turtle | |
Helopanoplia distincta Hay 1908 turtle | |
Trionychidae indet. Gray 1825 softshell turtle | |
Basilemys sinuosa Riggs 1906 turtle | |
Thoracosaurus neocesariensis De Kay 1842 crocodilian | |
Brachychampsa montana Gilmore 1911 crocodilian | |
"Leidyosuchus sternbergi" = Borealosuchus sternbergii
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian | |
Ceratopsidae indet. Marsh 1888 ceratopsid | |
Hadrosaurinae indet. Lambe 1918 hadrosaurine | |
Thescelosaurus neglectus Gilmore 1913 ornithopod | |
Troodon sp. Leidy 1856 maniraptoran | |
Richardoestesia isosceles Sankey 2001 maniraptoran
Saurornitholestes sp. Sues 1978 maniraptoran | |
Paronychodon lacustris Cope 1876 maniraptoran | |
Aves | |
Hesperornithiformes indet. Fürbringer 1888 bird | |
Reptilia | |
Caenagnathidae indet. Sternberg 1940 maniraptoran | |
Ornithomimidae indet. Marsh 1890 ornithomimid | |
Tyrannosaurus rex Osborn 1905 tyrant lizard king | |
Lepidosauria indet. Haeckel 1866 lepidosaur | |
Champsosaurus sp. Cope 1876 choristodere | |
Actinopteri | |
Lepisosteus occidentalis Leidy 1856 gar | |
"Kindleia fragosa" = Cyclurus fragosus, Melvius thomasi
"Kindleia fragosa" = Cyclurus fragosus Jordan 1927 bowfin
Melvius thomasi Bryant 1987 bowfin | |
Belonostomus longirostris Lambe 1902 |