PTRM V88004, Mud Buttes: Late/Upper Maastrichtian, North Dakota
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Mammalia
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Theria indet.
Parker and Haswell 1897
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1 specimen | |||||||||
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Reptilia
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Brachychampsa montana
Gilmore 1911
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11 specimens | |||||||||
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Thoracosaurus neocesariensis
(De Kay 1842)
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1 specimen | |||||||||
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Leidyosuchus sternbergi
(Gilmore 1910)
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12 specimens | |||||||||
| recombined as Borealosuchus sternbergii | ||||||||||
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Reptilia
- Hadrosauridae
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Hadrosaurinae indet.
Lambe 1918
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7 specimens | |||||||||
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Reptilia
- Ceratopsidae
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Ceratopsidae indet.
Marsh 1888
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28 specimens | |||||||||
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Reptilia
- Caenagnathidae
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Caenagnathidae indet.
Sternberg 1940
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2 specimens | |||||||||
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Reptilia
- Dromaeosauridae
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Richardoestesia isosceles
Sankey 2001
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6 specimens | |||||||||
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Saurornitholestes sp.
Sues 1978
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3 specimens | |||||||||
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Reptilia
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Paronychodon lacustris
Cope 1876
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1 specimen | |||||||||
| nomen dubium belonging to Paronychodon | ||||||||||
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Reptilia
- Tyrannosauridae
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Tyrannosaurus rex
Osborn 1905
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3 specimens | |||||||||
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Reptilia
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Champsosaurus sp.
Cope 1876
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14 specimens | |||||||||
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Lepidosauria indet.
(Haeckel 1866)
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10 specimens | |||||||||
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Reptilia
- Baenidae
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Baenidae indet.
Cope 1882
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1 specimen | |||||||||
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Boremys sp.
Lambe 1906
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Lyson et al. 2011 | 1 specimen | ||||||||
| PTRM 9386, neural fragment | ||||||||||
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Plesiobaena antiqua
(Lambe 1902)
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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
- 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
- Testudines
- Nanhsiungchelyidae
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Basilemys sinuosa
Riggs 1906
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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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Amphibia
- Temnospondyli
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Caudata indet.
(Scopoli 1777)
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6 specimens | |||||||||
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Amphibia
- Temnospondyli
- Urodela
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Habrosaurus dilatus
Gilmore 1928
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2 specimens | |||||||||
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Scapherpeton tectum
Cope 1876
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9 specimens | |||||||||
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Amphibia
- Temnospondyli
- Batrachosauroididae
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Opisthotriton kayi
Auffenberg 1961
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1 specimen | |||||||||
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Actinopteri
- Lepisosteiformes
- Lepisosteidae
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Lepisosteus occidentalis
(Leidy 1856)
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21 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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150 specimens | |||||||||
| recombined as Cyclurus fragosus | ||||||||||
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Melvius thomasi
Bryant 1987
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2 specimens | |||||||||
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Chondrichthyes
- Hybodontiformes
- Lonchidiidae
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Lissodus selachos
(Estes 1964)
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1 specimen | |||||||||
| original and current combination Lonchidion selachos | ||||||||||
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Chondrichthyes
- Rajiformes
- Rhinobatidae
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Myledaphus bipartitus
Cope 1876
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6 specimens | |||||||||
| 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: | 10.61 m | ||
| Local order: | top to bottom | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: datum -10.61, K-T section 9906 | |||||
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: | 45118 | ||
| Authorizer: | M. Carrano, R. Benson | Enterer: | M. Carrano, R. Benson |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2004-10-06 08:56:37 | Last modified: | 2022-02-01 07:44:31 |
| Access level: | the public | Released: | 2004-10-06 08:56:37 |
| 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] |