Where: Slope County, North Dakota (46.5° N, 104.0° W: paleocoordinates 52.7° N, 77.4° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)
• datum -5.50, K-T section 9653
• bed-level stratigraphic resolution
Environment/lithology: "channel"; 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 45143: authorized by Matthew Carrano, entered by Matthew Carrano on 07.10.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Ceratopsidae indet. Marsh 1888 ceratopsid | |
Hadrosaurinae indet. Lambe 1918 hadrosaurine | |
"Leidyosuchus sternbergi" = Borealosuchus sternbergii
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian | |
Brachychampsa montana Gilmore 1911 crocodilian | |
Compsemys victa Leidy 1856 turtle | |
Chelydridae indet. Swainson 1839 turtle | |
Adocus sp. Cope 1868 turtle | |
Trionychidae indet. Gray 1825 softshell turtle | |
Amphibia | |
Caudata indet. salamander | |
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 | |
Chondrichthyes | |
"Lissodus selachos" = Lonchidion selachos
"Lissodus selachos" = Lonchidion selachos Estes 1964 elasmobranch |