7 miles southeast of Castle Rock: Late/Upper Coniacian - Early/Lower Santonian, Kansas
collected by B. F. Mudge 1873
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Mosasauridae
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Clidastes planifrons n. sp.
Cope 1874
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1 individual | |||||||||
recombined as Platecarpus planifrons | ||||||||||
Holotype - AMNH 1491, incomplete cranial and postcranial elements, consisting of frontal, right pterygoid, quadrates, parietal, left postorbitofrontal, left squamosal, left splenial, left angular, left surangular, left coronoid, basisphenoid-basioccipital, fifteen anterior vertebrae including atlas-axis, and other miscellaneous bone fragments | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Kansas | County: | Trego |
Coordinates: | 38.8° North, 100.1° West (view map) | ||||
Paleocoordinates: | 41.6° North, 66.4° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | small collection |
Time
Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
10 m.y. bin: | Cretaceous 6 | ||
Key time interval: | Late/Upper Coniacian - Early/Lower Santonian | ||
Age range of interval: | 89.30000 - 83.50000 m.y. ago |
Stratigraphy
Geological group: | Colorado | Formation: | Niobrara | Member: | Smoky Hill Chalk |
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: lower part of member |
Lithology and environment
Primary lithology: | chalk |
Includes fossils? | Y |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection | ||
Reason for describing collection: | taxonomic analysis | ||
Museum repositories: | AMNH | ||
Collectors: | B. F. Mudge | Collection dates: | 1873 |
Metadata
Also known as: | Clidastes planifrons type | ||
Database number: | 123571 | ||
Authorizer: | P. Mannion | Enterer: | P. Mannion |
Modifier: | M. Carrano | Research group: | vertebrate |
Created: | 2012-01-26 01:30:00 | Last modified: | 2017-10-19 13:05:41 |
Access level: | the public | Released: | 2012-01-26 01:30:00 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
63646. | E. D. Cope. 1874. Review of the Vertebrata of the Cretaceous Period found west of the Mississippi River. Bulletin of the United States Geological and Geographical Survey of the Territories, First Series 2:3-48 [M. Carrano/M. Carrano/M. Carrano] |
Secondary references:
33389 | T. Konishi and M. W. Caldwell. 2007. New specimens of Platecarpus planifrons (Cope, 1874) (Squamata: Mosasauridae) and a revised taxonomy of the genus. Journal of Vertebrate Paleontology 27(1):59-72 [M. Carrano/H. Street/P. Mannion] |