PTRM V87006, East Marmarth: 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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cf. 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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Melvius thomasi
Bryant 1987
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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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Amphibia
- Temnospondyli
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Caudata indet.
Scopoli 1777
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Amphibia
- Temnospondyli
- Urodela
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Scapherpeton tectum
Cope 1876
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Reptilia
- Dromaeosauridae
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Saurornitholestes sp.
Sues 1978
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1 specimen | |||||||||
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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
- Caenagnathidae
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Caenagnathidae indet.
Sternberg 1940
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2 specimens | |||||||||
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Reptilia
- Tyrannosauridae
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Tyrannosaurus rex
Osborn 1905
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11 specimens | |||||||||
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Reptilia
- Ceratopsidae
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Ceratopsidae indet.
Marsh 1888
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42 specimens | |||||||||
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Reptilia
- Hadrosauridae
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Hadrosaurinae indet.
Lambe 1918
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38 specimens | |||||||||
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Reptilia
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Leidyosuchus sternbergi
(Gilmore 1910)
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| recombined as Borealosuchus sternbergii | ||||||||||
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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
- Testudines
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Kinosternidae indet.
(Hay 1892)
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1 specimen | |||||||||
| spelled with current rank as Kinosternoidea | ||||||||||
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Helopanoplia distincta
Hay 1908
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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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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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Baenidae indet.
Cope 1882
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1 specimen | |||||||||
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Plesiobaena antiqua
(Lambe 1902)
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1 specimen | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | North Dakota | County: | Slope |
| Coordinates: | 46.3° North, 103.9° West (view map) | ||||
| Paleocoordinates: | 52.5° North, 77.3° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Altitude: | 853 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: | East Marmarth | Local bed: | 28.00 m | ||
| Local order: | top to bottom | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: datum -28.00, K-T section 86148 | |||||
Lithology and environment
| Primary lithology: | sandstone |
| Includes fossils? | Y |
| Environment: | "channel" |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | concentrated |
| Size of fossils: | macrofossils,microfossils |
| 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: | 45145 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | G. Varnham | Research group: | vertebrate |
| Created: | 2004-10-07 13:37:46 | Last modified: | 2022-02-01 07:43:41 |
| Access level: | the public | Released: | 2004-10-07 13:37:46 |
| 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] |