PTRM V96015, Cannonball Creek: Maastrichtian, North Dakota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
Compsemys victa (Leidy 1856)
1 specimen
Reptilia - Baenidae
Baenidae indet. Cope 1882
1 specimen
Plesiobaena antiqua (Lambe 1902)
1 specimen
Reptilia - Testudines - Adocidae
Adocus sp. Cope 1868
1 specimen
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
1 specimen
Reptilia - Testudines - Nanhsiungchelyidae
Basilemys sinuosa Riggs 1906
1 specimen
Reptilia
Brachychampsa montana Gilmore 1911
1 specimen
Leidyosuchus sternbergi (Gilmore 1910)
1 specimen
recombined as Borealosuchus sternbergii
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
3 specimens
Reptilia - Hadrosauridae
Hadrosaurinae indet. Lambe 1918
1 specimen
Reptilia - Hesperornithiformes
Hesperornithiformes indet. Fürbringer 1888
1 specimen
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
21 specimens
original and current combination Lepidotus occidentalis
Actinopteri - Amiiformes - Amiidae
Kindleia fragosa Jordan 1927
5 specimens
recombined as Cyclurus fragosus
Melvius thomasi Bryant 1987
1 specimen
see common names

Geography
Country:United States State/province:North Dakota County:Slope
Coordinates: 46.5° North, 104.0° West (view map)
Paleocoordinates:52.9° North, 77.0° West
Basis of coordinate:based on nearby landmark
Altitude:852 meters
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Maastrichtian
Age range of interval:72.10000 - 66.00000 m.y. ago
Stratigraphy
Formation:Hell Creek
Local section:Cannonball Creek Local bed:8.41 m
Local order:top to bottom
Stratigraphic resolution:bed
Stratigraphy comments: datum -8.41, K-T section 9144
Lithology and environment
Primary lithology: silty mudstone
Includes fossils?Y
Environment:"floodplain"
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:macrofossils,mesofossils
Disassociated major elements:many
Disassociated minor elements:many
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:45313
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:M. Carrano Research group:vertebrate
Created:2004-10-19 10:40:43 Last modified:2005-06-09 16:17:53
Access level:the public Released:2004-10-19 10:40:43
Creative Commons license:CC BY
Reference information

Primary reference:

11749.ETE 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]