Conger Ranch, SDSM V9011: Late/Upper Santonian, South Dakota
collected 1990
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Echinorhynus sp.
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Reptilia
- Plesiosauria
- Polycotylidae
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Polycotylus latipinnis
Cope 1869
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| SDSM 23020 | ||||||||||
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Reptilia
- Mosasauridae
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Mosasauridae indet.
Gervais 1852
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| tooth | ||||||||||
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Actinopteri
- Crossognathiformes
- Pachyrhizodontidae
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Pachyrhizodus minimus
Stewart 1899
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Actinopteri
- Tselfatiiformes
- Plethodidae
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Bananogmius sp.
Whitley 1940
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Actinopteri
- Salmoniformes
- Cimolichthyidae
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Cimolichthys nepaholica
(Cope 1872)
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Actinopteri
- Aulopiformes
- Ichthyotringidae
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cf. Apateodus sp.
Woodward 1901
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Actinopteri
- Aulopiformes
- Enchodontidae
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Enchodus petrosus
Cope 1874
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Enchodus shumardi
Leidy 1856
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Actinopteri
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Acanthomorpha indet.
(Rosen 1973)
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| spelled with current rank as Acanthomorphata | ||||||||||
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Clupeomorpha indet.
(Greenwood et al. 1966)
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Actinopteri
- Ichthyodectiformes
- Saurodontidae
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Saurodontidae indet.
Stewart
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Actinopteri
- Ichthyodectiformes
- Ichthyodectidae
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Ichthyodectidae indet.
Crook 1892
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Chondrichthyes
- Lamniformes
- Anacoracidae
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Squalicorax kaupi
(Agassiz 1843)
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | South Dakota | County: | Fall River |
| Coordinates: | 43.4° North, 103.3° West (view map) | ||||
| Paleocoordinates: | 47.1° North, 67.9° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Altitude: | 940 meters | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Santonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Late/Upper Santonian | ||
| Age range of interval: | 86.30000 - 83.60000 m.y. ago |
Stratigraphy
| Formation: | Niobrara | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: uppermost Niobrara Formation, a meter below the Niobrara-Pierre Shale contact | |||||
Lithology and environment
| Primary lithology: | bentonitic,yellow chalk |
| Includes fossils? | Y |
| Lithology description: yellow-tan argillaceous chalk, with bentonite | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | SDSM | Collection dates: | 1990 |
Metadata
| Database number: | 194130 | ||
| Authorizer: | P. Mannion | Enterer: | P. Mannion |
| Modifier: | P. Mannion | Research group: | vertebrate |
| Created: | 2018-06-14 06:51:12 | Last modified: | 2023-08-02 08:03:41 |
| Access level: | the public | Released: | 2018-06-14 06:51:12 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 65935. | B. A. Schumacher and J. E. Martin. 2016. Polycotylus latipinnis Cope (Plesiosauria, Polycotylidae), a nearly complete skeleton from the Niobrara Formation (Early Campanian) of southwestern South Dakota. Journal of Vertebrate Paleontology 36(1):e1031341:1-15 [P. Mannion/P. Mannion] |