Big Bend National Park (west and east parts): Late/Upper Coniacian - Early/Lower Santonian, Texas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Mosasauridae
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Tylosaurus kansasensis
Everhart 2005
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1 individual | |||||||||
| SMU76543, complete skull and near-complete postcranium | ||||||||||
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Tylosaurus nepaeolicus
(Cope 1874)
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3 specimens | |||||||||
| SMU76532 (skeleton), SMU76544 (large skull and partial postcrania), SMU76546 (articulated skull and partial postcrania) | ||||||||||
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Platecarpus planifrons
(Cope 1874)
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3 specimens | |||||||||
| TMM 43354-1 (skull, numerous vertebrae, and anterior appendicular elements), SMU76542 (a fragmentary specimen) (possibly also SMU76540) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Texas | County: | Brewster |
| Coordinates: | 29.3° North, 103.6° West (view map) | ||||
| Paleocoordinates: | 33.2° North, 73.2° West | ||||
| Basis of coordinate: | based on political unit | ||||
| Geographic resolution: | local area |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| 10 m.y. bin: | Cretaceous 6 | ||
| Key time interval: | Late/Upper Coniacian - Early/Lower Santonian | Other zone: | Inoceramus undulatoplicatus |
| Age range of interval: | 89.80000 - 83.60000 m.y. ago |
Stratigraphy
| Formation: | Boquillas | Member: | San Vicente | ||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Stratigraphy in text not defined with respect to geographic locality. Same geographical data will be used, and divisions based upon stratigraphic information. PJW: Inoceramus undulatoplicatus zone is Early Santonian, not Late Coniacian. | |||||
Lithology and environment
| Primary lithology: | "limestone" |
| Lithology description: The San Vicente Member of the Boquillas Formation contains generally softer chalky limestone beds that tend to be of more uniform thickness than the Ernst Member, with more soft marl and shaley beds near the top. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Also known as: | Mosasaur localities | ||
| Database number: | 151422 | ||
| Authorizer: | P. Mannion | Enterer: | J. Tennant |
| Modifier: | P. Wagner | Research group: | vertebrate |
| Created: | 2013-10-01 18:46:24 | Last modified: | 2023-01-09 22:21:50 |
| Access level: | the public | Released: | 2013-10-01 18:46:24 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 48383. | G. L. Bell Jr., K. R. Barnes, and M. J. Polcyn. 2013. Late Cretaceous mosasauroids (Reptilia, Squamata) of the Big bend region in Texas, USA. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 103:571-581 [P. Mannion/J. Tennant/F. Aspromonte] |