PTRM V97006: Late/Upper Maastrichtian, North Dakota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Rajiformes
- Rhinobatidae
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Myledaphus bipartitus
Cope 1876
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Acipenseriformes
- Acipenseridae
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Acipenser sp.
Linnaeus 1758
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| listed as cf. "Acipenser" | ||||||||||
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Actinopteri
- Amiiformes
- Amiidae
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Kindleia fragosa
Jordan 1927
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| recombined as Cyclurus fragosus | ||||||||||
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Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteus occidentalis
(Leidy 1856)
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| original and current combination Lepidotus occidentalis | ||||||||||
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Reptilia
- Coeluridae
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Coelurosauridae indet.
Cope 1882
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5 specimens | |||||||||
| synonym of Coeluridae | ||||||||||
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Reptilia
- Dromaeosauridae
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Richardoestesia isosceles
Sankey 2001
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1 specimen | |||||||||
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Reptilia
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Aves indet.
Linnaeus 1758
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1 specimen | |||||||||
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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
- Hadrosauridae
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Hadrosaurinae indet.
Lambe 1918
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3 specimens | |||||||||
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Reptilia
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Brachychampsa montana
Gilmore 1911
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Champsosaurus sp.
Cope 1876
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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
- Trionychidae
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Trionychidae indet.
Gray 1825
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1 specimen | |||||||||
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Reptilia
- Baenidae
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Baenidae indet.
Cope 1882
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1 specimen | |||||||||
| 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, 77.3° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Altitude: | 903 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: | Sunset Butte | Local bed: | 27.00 m | ||
| Local order: | top to bottom | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: datum -27.00, K-T secetion 9317 | |||||
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 |
Metadata
| Database number: | 45122 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2004-10-06 10:22:22 | Last modified: | 2022-02-01 07:52:04 |
| Access level: | the public | Released: | 2004-10-06 10:22:22 |
| 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] |