List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Mosasauridae
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Clidastes tortor
(Cope 1871)
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1 specimen | ||||||
synonym of Clidastes propython | |||||||
see common names |
Geography
Country: | United States | State/province: | South Dakota | County: | Yankton |
Coordinates: | 43.0° North, 97.3° West (view map) | ||||
Paleocoordinates: | 44.6° North, 61.7° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | small collection |
Stratigraphy
Geological group: | Colorado | Formation: | Niobrara | Member: | Smoky Hill Chalk |
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: "approximately 15 feet below the contact of the Niobrara and the basal beds of the overlying Pierre formation." |
Lithology and environment
Primary lithology: | calcareous chalk |
Includes fossils? | Y |
Environment: | carbonate indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Preservation of anatomical detail: | medium |
Abundance in sediment: | rare |
Fragmentation: | occasional |
Spatial resolution: | parautochthonous |
Collection methods and comments
Collection methods: | field collection | ||
Collection size: | 1 specimens | ||
Reason for describing collection: | general faunal/floral analysis | ||
Collectors: | R. Martin | Collection dates: | March 3, 1957 |
Collection method comments: Found both in talus and in situ |
Metadata
Database number: | 107782 | ||
Authorizer: | M. Carrano | Enterer: | H. Street |
Modifier: | J. Alroy | Research group: | vertebrate |
Created: | 2011-04-15 07:14:13 | Last modified: | 2012-10-27 22:51:15 |
Access level: | the public | Released: | 2011-04-15 07:14:13 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
35843. | ETE | W. Sevon. 1957. A Niobrara mosasaur from South Dakota. Proceedings of the South Dakota Academy of Science 36:144-146 [M. Carrano/H. Street] |