NMB Locality 15907 - Rio Gurabo: Late/Upper Miocene, Dominican Republic
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Malacostraca
- Decapoda
- Diogenidae
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Petrochirus inequalis
Rathbun 1919
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Malacostraca
- Decapoda
- Leucosiidae
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Persephona prepunctata
Rathbun 1919
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Malacostraca
- Decapoda
- Pilumnidae
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Pilumnus sp.
Leach 1816
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Malacostraca
- Decapoda
- Panopeidae
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Panopeus sp.
Milne Edwards 1834
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Malacostraca
- Decapoda
- Aethridae
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Hepatus guraboensis
Collins 2009
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Malacostraca
- Decapoda
- Portunidae
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Callinectes declivis
Rathbun 1918
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Malacostraca
- Decapoda
- Calappidae
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Calappa flammea
(Herbst 1794)
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Cryptosoma bairdii
(Stimpson 1860)
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Geography
| Country: | Dominican Republic |
| Coordinates: | 19.5° North, 71.2° West (view map) |
| Paleocoordinates: | 19.4° North, 70.4° West |
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 6 | ||
| Key time interval: | Late/Upper Miocene | ||
| Age range of interval: | 11.63000 - 5.33300 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | coarse,shelly/skeletal silty sandstone |
| Lithology description: Saunders et al., 1986, describes this locality as a "silty band full of mollusks." The locality is in the upper section of the Cercado Formation at Rio Gurabo, which is dominated by sands and silty sands. The sands are often course-grained and show scour structures and planar cross-bedding. Amphistega are common and often concentrated along the cross-beds where they stand out as lines. Bioturbation is intense, and there are frequent burrows with shell debris. | |
| Environment: | shoreface |
| Geology comments: The Cercado Formation on Rio Gurabo represents nearshore to shallow shelf, or nearshore, lagoon to reef settings with deposition of no more than 20 meters. More specifically, there are seagrass-associated gastropods that most likely lived in thickets of Thalassia on the sea bottom, possibly associated with sand shoals, as well. Coral reefs were also present, and were ultimately buried by siliciclastic material. (Abdollahian 2015; Saunders et al., 1986; McNeill et al., 2012; Vokes 1989a; Waller 2011). | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 228609 | ||
| Authorizer: | J. Wolfe | Enterer: | A. Lynch |
| Modifier: | A. Lynch | ||
| Created: | 2022-12-17 18:56:13 | Last modified: | 2022-12-18 21:16:10 |
| Access level: | the public | Released: | 2022-12-17 18:56:13 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 34337. | J. S. H. Collins, R. W. Portell, and S. K. Donovan. 2009. Decapod crustaceans from the Neogene of the Caribbean: diversity, distribution and prospectus. Scripta Geologica 138:55-111 [A. Hendy/A. Hendy] |