PTRM V96015, Cannonball Creek: Maastrichtian, North Dakota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
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Compsemys victa
(Leidy 1856)
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1 specimen | ||||||
Reptilia
- Baenidae
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Baenidae indet.
Cope 1882
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1 specimen | ||||||
Plesiobaena antiqua
(Lambe 1902)
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1 specimen | ||||||
Reptilia
- Testudines
- Adocidae
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Adocus sp.
Cope 1868
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1 specimen | ||||||
Reptilia
- Testudines
- Trionychidae
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Trionychidae indet.
Gray 1825
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1 specimen | ||||||
Reptilia
- Testudines
- Nanhsiungchelyidae
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Basilemys sinuosa
Riggs 1906
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1 specimen | ||||||
Reptilia
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Brachychampsa montana
Gilmore 1911
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1 specimen | ||||||
Leidyosuchus sternbergi
(Gilmore 1910)
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1 specimen | ||||||
recombined as Borealosuchus sternbergii | |||||||
Reptilia
- Ceratopsidae
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Ceratopsidae indet.
Marsh 1888
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3 specimens | ||||||
Reptilia
- Hadrosauridae
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Hadrosaurinae indet.
Lambe 1918
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1 specimen | ||||||
Reptilia
- Hesperornithiformes
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Hesperornithiformes indet.
Fürbringer 1888
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1 specimen | ||||||
Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteus occidentalis
(Leidy 1856)
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21 specimens | ||||||
original and current combination Lepidotus occidentalis | |||||||
Actinopteri
- Amiiformes
- Amiidae
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Kindleia fragosa
Jordan 1927
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5 specimens | ||||||
recombined as Cyclurus fragosus | |||||||
Melvius thomasi
Bryant 1987
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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] |