PTRM V97024: Late/Upper Maastrichtian, North Dakota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
1 specimen
Reptilia - Testudines - Adocidae
Adocus sp. Cope 1868
1 specimen
Reptilia - Testudines - Nanhsiungchelyidae
Basilemys sinuosa Riggs 1906
1 specimen
Reptilia - Testudines
Helopanoplia distincta Hay 1908
1 specimen
Reptilia
Compsemys victa (Leidy 1856)
1 specimen
Reptilia - Baenidae
Plesiobaena antiqua (Lambe 1902)
1 specimen
Reptilia
Lepidosauria indet. (Haeckel 1866)
1 specimen
Champsosaurus sp. Cope 1876
4 specimens
Reptilia - Ornithomimidae
Ornithomimidae indet. Marsh 1890
2 specimens
Reptilia - Tyrannosauridae
Tyrannosaurus rex Osborn 1905
1 specimen
Reptilia - Caenagnathidae
Caenagnathidae indet. Sternberg 1940
1 specimen
Reptilia
Aves indet. Linnaeus 1758
1 specimen
Reptilia - Coeluridae
Coelurosauridae indet. Cope 1882
1 specimen
synonym of Coeluridae
Reptilia - Ceratopsidae
Ceratopsidae indet. Marsh 1888
6 specimens
Reptilia
Brachychampsa montana Gilmore 1911
4 specimens
Thoracosaurus neocesariensis (De Kay 1842)
4 specimens
Leidyosuchus sternbergi (Gilmore 1910)
7 specimens
recombined as Borealosuchus sternbergii
Amphibia - Temnospondyli
Caudata indet. Scopoli 1777
1 specimen
Actinopteri - Amiiformes - Amiidae
Melvius thomasi Bryant 1987
2 specimens
Kindleia fragosa Jordan 1927
6 specimens
recombined as Cyclurus fragosus
Actinopteri - Lepisosteiformes - Lepisosteidae
Lepisosteus occidentalis (Leidy 1856)
3 specimens
original and current combination Lepidotus occidentalis
see common names

Geography
Country:United States State/province:North Dakota County:Slope
Coordinates: 46.4° North, 103.9° West (view map)
Paleocoordinates:52.6° North, 77.3° West
Basis of coordinate:estimated from map
Altitude:856 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:72.10000 - 66.00000 m.y. ago
Stratigraphy
Formation:Hell Creek
Local section:East Marmarth Local bed:3.40 m
Local order:top to bottom
Stratigraphic resolution:bed
Stratigraphy comments: datum -3.40, K-T section 86148
Lithology and environment
Primary lithology: carbonaceous "shale"
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
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:45381
Authorizer:M. Carrano Enterer:M. Carrano
Modifier:G. Varnham Research group:vertebrate
Created:2004-10-20 05:44:41 Last modified:2022-02-01 07:52:21
Access level:the public Released:2004-10-20 05:44:41
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]