Andy Anderson Farm, near Cedar Hill: Late/Upper Cenomanian - Early/Lower Turonian, Texas
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Plesiosauria
- Elasmosauridae
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Elasmosaurus morgani n. sp.
Welles 1949
|
1 individual | |||||||||
| recombined as Libonectes morgani | ||||||||||
| SMUSMP 69120 (holotype) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Texas | County: | Dallas |
| Coordinates: | 32.6° North, 97.0° West (view map) | ||||
| Paleocoordinates: | 32.0° North, 63.0° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Key time interval: | Late/Upper Cenomanian - Early/Lower Turonian | ||
| Age range of interval: | 100.50000 - 89.80000 m.y. ago |
Stratigraphy
| Geological group: | Eagle Ford | Formation: | Britton |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | concretionary,hematitic,gray "limestone" |
| Lithology description: The specimen is in a very hard gray limestone conretion that weathers on the surface to a soft yellowish clay. Small nodules of hematite occur, superficially weathered to limonite. Small uncrushed cehalopod shells are abundant in the limestone. The matrix is crossed by veins of crystalline limestone and gypsum. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
| Associated major elements: | all |
| Temporal resolution: | snapshot |
Collection methods and comments
| Collection methods: | field collection,survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Also known as: | Libonectes morgani type locality | ||
| Database number: | 77349 | ||
| Authorizer: | M. Carrano | Enterer: | M. Carrano |
| Modifier: | P. Mannion | Research group: | vertebrate |
| Created: | 2008-01-09 07:58:16 | Last modified: | 2018-07-27 09:55:23 |
| Access level: | the public | Released: | 2008-01-09 07:58:16 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 37559. | S. P. Welles. 1949. A new elasmosaur from the Eagle Ford Shale of Texas. Fondren Science Series 1:1-28 [R. Benson/R. Benson/R. Benson] |
Secondary references:
| 26178 | ETE | K. Carpenter. 1997. Comparative cranial anatomy of two North American Cretaceous plesiosaurs. In J. M. Callaway & E. L. Nicholls (eds.), Ancient Marine Reptiles. Academic Press, New York 191-216 [M. Carrano/M. Carrano] |
| 26172 | ETE | K. Carpenter. 1999. Revision of North American elasmosaurs from the Cretaceous of the Western Interior. Paludicola 2(2):148-173 [M. Carrano/M. Carrano] |
| 66439 | S. Sachs and B. P. Kear. 2017. Redescription of the elasmosaurid plesiosaurian Libonectes atlasense from the Upper Cretaceous of Morocco. Cretaceous Research 74:205-222 [P. Mannion/P. Mannion] |