PTRM V96003: Maastrichtian, North Dakota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Ceratopsidae
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Ceratopsidae indet.
Marsh 1888
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1 specimen | |||||||||
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Reptilia
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Champsosaurus sp.
Cope 1876
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2 specimens | |||||||||
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Reptilia
- Testudines
- Trionychidae
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Trionychidae indet.
Gray 1825
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1 specimen | |||||||||
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Reptilia
- Testudines
- Adocidae
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Adocus sp.
Cope 1868
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1 specimen | |||||||||
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Reptilia
- Testudines
- Chelydridae
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Chelydridae indet.
Swainson 1839
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1 specimen | |||||||||
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Reptilia
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Compsemys victa
(Leidy 1856)
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1 specimen | |||||||||
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Reptilia
- Baenidae
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Boremys sp.
Lambe 1906
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Lyson et al. 2011 | 1 specimen | ||||||||
| PTRM 9471, posterior end of neural 1? | ||||||||||
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Plesiobaena antiqua
(Lambe 1902)
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1 specimen | |||||||||
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Actinopteri
- Amiiformes
- Amiidae
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Kindleia fragosa
Jordan 1927
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1 specimen | |||||||||
| recombined as Cyclurus fragosus | ||||||||||
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Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteus occidentalis
(Leidy 1856)
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1 specimen | |||||||||
| original and current combination Lepidotus occidentalis | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | North Dakota | County: | Bowman |
| Coordinates: | 46.2° North, 103.8° West (view map) | ||||
| Paleocoordinates: | 52.5° North, 76.6° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Altitude: | 884 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: | Bobcat Butte | Local bed: | 4.50 m | ||
| Local order: | top to bottom | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: datum -4.50, K-T section 86148 | |||||
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 |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 45135 | ||
| Authorizer: | M. Carrano, R. Benson | Enterer: | M. Carrano, R. Benson |
| Modifier: | M. Carrano | Research group: | vertebrate |
| Created: | 2004-10-06 13:35:07 | Last modified: | 2005-06-09 16:05:55 |
| Access level: | the public | Released: | 2004-10-06 13:35:07 |
| 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:
| 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] |