PTRM V96005: Late/Upper Maastrichtian, North Dakota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Testudines
- Trionychidae
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Trionychidae indet.
Gray 1825
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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
- Chelydridae
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Chelydridae indet.
Swainson 1839
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1 specimen | |||||||||
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
- Ceratopsidae
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Ceratopsidae indet.
Marsh 1888
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1 specimen | |||||||||
Amphibia
- Temnospondyli
- Urodela
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Scapherpeton tectum
Cope 1876
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1 specimen | |||||||||
Actinopteri
- Amiiformes
- Amiidae
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Melvius thomasi
Bryant 1987
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5 specimens | |||||||||
Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteus occidentalis
(Leidy 1856)
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39 specimens | |||||||||
original and current combination Lepidotus occidentalis | ||||||||||
Acipenseriformes
- Acipenseridae
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cf. Acipenser sp.
Linnaeus 1758
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1 specimen | |||||||||
listed as cf. "Acipenser" | ||||||||||
see common names |
Geography
Country: | United States | State/province: | North Dakota | County: | Bowman |
Coordinates: | 46.2° North, 103.8° West (view map) | ||||
Paleocoordinates: | 52.4° North, 77.2° 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: | Late/Upper Maastrichtian | ||
Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
Formation: | Hell Creek | ||||
Local section: | Bobcat Butte | Local bed: | 5.50 m | ||
Local order: | top to bottom | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: datum -5.50, K-T section 86148 |
Lithology and environment
Primary lithology: | silty mudstone |
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 |
Metadata
Database number: | 45133 | ||
Authorizer: | M. Carrano | Enterer: | M. Carrano |
Modifier: | G. Varnham | Research group: | vertebrate |
Created: | 2004-10-06 13:22:57 | Last modified: | 2022-02-01 07:51:48 |
Access level: | the public | Released: | 2004-10-06 13:22:57 |
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] |