Montgomery County decapods: Late/Upper Coniacian - Early/Lower Santonian, Alabama
collected by R. C. Cason, D. Dollar
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Malacostraca
- Decapoda
- Paguridae
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Pagurus convexus n. sp.
Whetstone and Collins 1982
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Malacostraca
- Decapoda
- Callianassidae
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Callianassa sp.
Leach 1814
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Actinopteri
- Aulopiformes
- Enchodontidae
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Enchodus sp.
Agassiz 1835
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Actinopteri
- Aspidorhynchiformes
- Aspidorhynchidae
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Belonostomus sp.
Agassiz 1834
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Chondrichthyes
- Rajiformes
- Ptychotrygonidae
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Ptychotrygon sp.
Jaekel 1894
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Chondrichthyes
- Lamniformes
- Odontaspididae
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Odontaspis sp.
Agassiz 1838
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Chondrichthyes
- Lamniformes
- Mitsukurinidae
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Scapanorhynchus sp.
Woodward 1889
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Chondrichthyes
- Lamniformes
- Otodontidae
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Cretolamna sp.
Glikman 1958
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Chondrichthyes
- Lamniformes
- Anacoracidae
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Squalicorax sp.
Whitley 1939
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Chondrichthyes
- Hybodontiformes
- Hybodontidae
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Hybodus sp.
Agassiz 1834
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Alabama | County: | Montgomery |
| Coordinates: | 32.3° North, 86.3° West (view map) | ||||
| Paleocoordinates: | 32.2° North, 55.3° West | ||||
| Basis of coordinate: | stated in text | ||||
| 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: | 89.80000 - 83.60000 m.y. ago |
Stratigraphy
| Formation: | Eutaw | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: from a "massively 'bedded'" horizon: does not belong to the Tombigee Member, contra Knowles et al. 1963 | |||||
Lithology and environment
| Primary lithology: | planar lamination,glauconitic,micaceous poorly lithified calcareous sandstone |
| Lithology description: "glauconitic and micaceous quartzsand which may be cemented locally by calcite" with "highly angled, foreset laminations in 'beds' (stacked sets of oblique laminae) up to two m in thickness" figured specimens do not include matrix, sediment was screened, and numerous shark teeth were recovered, suggesting poor lithification | |
| Environment: | paralic indet. |
| Geology comments: "this type of bedding in a association with a shallow-marine fauna would normally be interpreted as indicative of a prograding beach" but "texture of the matrix indicates more rapid deposition" | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils |
Collection methods and comments
| Collection methods: | bulk,sieve,survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | BMNH |
| Collectors: | R. C. Cason, D. Dollar |
| Collection method comments: "bulk screening"
BMNH In., Geological Survey of Alabama, and personal collections | |
Metadata
| Database number: | 90242 | ||
| Authorizer: | J. Alroy | Enterer: | J. Alroy |
| Modifier: | J. Fearon | Research group: | marine invertebrate |
| Created: | 2009-07-14 19:06:03 | Last modified: | 2024-02-21 01:25:08 |
| Access level: | the public | Released: | 2009-07-14 19:06:03 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 30295. | K. N. Whetstone and J. S. H. Collins. 1982. Fossil Crabs (Crustacea: Decapoda) from the Upper Cretaceous Eutaw Formation of Alabama. Journal of Paleontology 56(5):1218-1222 [J. Alroy/J. Alroy] |