PTRM V88012, Mud Buttes: Late/Upper Maastrichtian, North Dakota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
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Brachychampsa montana
Gilmore 1911
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4 specimens | ||||||
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Leidyosuchus sternbergi
(Gilmore 1910)
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9 specimens | ||||||
| recombined as Borealosuchus sternbergii | |||||||
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Reptilia
- Ceratopsidae
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Ceratopsidae indet.
Marsh 1888
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21 specimens | ||||||
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Reptilia
- Dromaeosauridae
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Richardoestesia isosceles
Sankey 2001
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3 specimens | ||||||
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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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Amphibia
- Temnospondyli
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Caudata indet.
Scopoli 1777
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1 specimen | ||||||
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Amphibia
- Temnospondyli
- Albanerpetontidae
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Albanerpetontidae indet.
Fox and Naylor 1982
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Gardner and DeMar 2013 | ||||||
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Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteus occidentalis
(Leidy 1856)
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12 specimens | ||||||
| original and current combination Lepidotus occidentalis | |||||||
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Actinopteri
- Amiiformes
- Amiidae
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Kindleia fragosa
Jordan 1927
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5 specimens | ||||||
| recombined as Cyclurus fragosus | |||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | North Dakota | County: | Bowman |
| Coordinates: | 46.0° North, 103.8° West (view map) | ||||
| Paleocoordinates: | 52.2° North, 77.3° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Altitude: | 970 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: | Mud Buttes | Local bed: | 2.37 m | ||
| Local order: | top to bottom | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: datum -2.37, K-T section 9906 | |||||
Lithology and environment
| Primary lithology: | siltstone |
| 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: | 45120 | ||
| Authorizer: | M. Carrano, P. Holroyd | Enterer: | M. Carrano, P. Holroyd |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2004-10-06 10:11:16 | Last modified: | 2022-02-01 07:45:01 |
| Access level: | the public | Released: | 2004-10-06 10:11:16 |
| 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:
| 65027 | J. D. Gardner and D. G. DeMar. 2013. Mesozoic and Palaeocene lissamphibian assemblages of North America: a comprehensive review. Palaeobiodiversity and Palaeoenvironments 93:459-515 [P. Holroyd/P. Holroyd/M. Carrano] |