PTRM V98027, Cannonball Creek: Late/Upper Maastrichtian, North Dakota
collected by North Dakota Geological Survey 1995

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
9 specimens
Reptilia - Hadrosauridae
Hadrosaurinae indet. Lambe 1918
24 specimens
Reptilia
Paronychodon lacustris Cope 1876
1 specimen
nomen dubium belonging to Paronychodon
Leidyosuchus sternbergi (Gilmore 1910)
11 specimens
recombined as Borealosuchus sternbergii
Thoracosaurus neocesariensis (De Kay 1842)
1 specimen
Lepidosauria indet. (Haeckel 1866)
2 specimens
Reptilia - Baenidae
Plesiobaena antiqua (Lambe 1902)
1 specimen
Boremys sp. Lambe 1906
Lyson et al. 2011 1 specimen
PTRM 10020, preneural?
Reptilia - Testudines - Adocidae
Adocus sp. Cope 1868
1 specimen
Reptilia - Testudines
Helopanoplia distincta Hay 1908
1 specimen
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
1 specimen
Mammalia
Mammalia indet. (Linnaeus 1758)
Boyd et al. 2017
NDGS 1796, 1797 and 1799
Mammalia - Gypsonictopidae
Gypsonictops sp. Simpson 1927
Boyd et al. 2017
NDGS 1798 and 1800
Mammalia - Alphadontidae
Alphadon sp. Simpson 1927
Boyd et al. 2017
NDGS 1801
Mammalia - Glasbiidae
Glasbius twitchelli Archibald 1982
Boyd et al. 2017
NDGS 1793, 1720-1724
Mammalia - Multituberculata
Multituberculata indet. (Cope 1884)
Boyd et al. 2017
NDGS 1794 and 1795
Mammalia - Multituberculata - Cimolodontidae
Cimolodon nitidus Marsh 1889
Boyd et al. 2017
NDGS 1790 and 1791
Mammalia - Multituberculata - Neoplagiaulacidae
Mesodma cf. thompsoni Clemens 1964
Boyd et al. 2017
NDGS 1789
Mammalia - Multituberculata - Cimolomyidae
Essonodon browni Simpson 1927
Boyd et al. 2017
NDGS 1792
Amphibia - Temnospondyli
Caudata indet. Scopoli 1777
1 specimen
Amphibia - Temnospondyli - Urodela
Scapherpeton tectum Cope 1876
1 specimen
Amphibia - Temnospondyli
Anura indet. (Fischer von Waldheim 1813)
1 specimen
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
29 specimens
original and current combination Lepidotus occidentalis
Actinopteri - Amiiformes - Amiidae
Kindleia fragosa Jordan 1927
29 specimens
recombined as Cyclurus fragosus
Melvius thomasi Bryant 1987
1 specimen
Actinopteri
Teleostei indet. (Müller 1846)
3 specimens
Chondrichthyes - Hybodontiformes - Lonchidiidae
Lissodus selachos (Estes 1964)
1 specimen
original and current combination Lonchidion selachos
Chondrichthyes - Rajiformes - Rhinobatidae
Myledaphus bipartitus Cope 1876
18 specimens
see common names

Geography
Country:United States State/province:North Dakota County:Slope
Coordinates: 46.4° North, 104.0° West (view map)
Paleocoordinates:52.7° North, 77.4° West
Basis of coordinate:estimated from map
Altitude:860 meters
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Maastrichtian 10 m.y. bin:Cretaceous 8
Key time interval:Late/Upper Maastrichtian
Age range of interval:70.60000 - 66.00000 m.y. ago
Stratigraphy
Formation:Hell Creek
Local section:Cannonball Creek Local bed:10.62 m
Local order:top to bottom
Stratigraphic resolution:bed
Stratigraphy comments: datum -10.62, K-T section 9909
Lithology and environment
Primary lithology: sandstone
Includes fossils?Y
Environment:"channel"
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:macrofossils,mesofossils
Disassociated major elements:many
Disassociated minor elements:many
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Collectors:North Dakota Geological Survey Collection dates:1995
Metadata
Also known as:NDGS L226
Database number:45137
Authorizer:M. Carrano, P. Mannion, R. Benson Enterer:M. Carrano, P. Mannion, R. Benson
Modifier:G. Varnham Research group:vertebrate
Created:2004-10-06 14:24:51 Last modified:2022-02-01 07:53:26
Access level:the public Released:2004-10-06 14:24:51
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]

Secondary references:

62517 C. A. Boyd, J. J. Person, and B. Barnes. 2017. Additions to the Lancian mammalian fauna from southwest North Dakota. Journal of Vertebrate Paleontology e1325368:1-15 [P. Mannion/P. Mannion]
41937 T. R. Lyson, W. G. Joyce, G. E. Knauss and D. A. Pearson. 2011. Boremys (Testudines, Baenidae) from the latest Cretaceous and early Paleocene of North Dakota: an 11 million year range extension and an additional K/T survivor. Journal of Vertebrate Paleontology 31(4):729-737 [R. Benson/R. Benson]