USGS Loc. 5194 - Shell Bluff [Shoal River Fm]: Serravallian, Florida
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Lucinida
- Lucinidae
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Phacoides (Pseudomiltha) paranodonta
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original and current combination Pseudomiltha | ||||||||||
rare | ||||||||||
Bivalvia
- Solenida
- Pharidae
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Ensis cf. directus
(Conrad 1844)
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rare | ||||||||||
Bivalvia
- Cardiida
- Mactridae
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Spisula (Hemimactra) craspedota
Gardner 1947
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recombined as Spisula craspedota | ||||||||||
rare | ||||||||||
Bivalvia
- Cardiida
- Veneridae
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Dosinia (Dosinidia) dalli
Gardner 1947
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present | ||||||||||
Clementia grayi
Dall 1900
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recombined as Clementia (Egesta) grayi | ||||||||||
rare | ||||||||||
Bivalvia
- Cardiida
- Cardiidae
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Cardium (Cerastoderma) waltonianum
Dall 1900
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rare | ||||||||||
Bivalvia
- Arcida
- Arcidae
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Arca (Diluvarca) waltonia
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spelled with current rank as Anadara (Diluvarca) | ||||||||||
rare | ||||||||||
Bivalvia
- Arcida
- Glycymerididae
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Glycymeris waltonensis
Gardner 1947
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recombined as Costaglycymeris waltonensis | ||||||||||
rare | ||||||||||
Gastropoda
- Neogastropoda
- Melongenidae
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Busycon aldrichi
Gardner 1947
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? in occurrence table | ||||||||||
see common names |
Geography
Country: | United States | State/province: | Florida | County: | Walton |
Coordinates: | 30.7° North, 86.1° West (view map) | ||||
Paleocoordinates: | 31.0° North, 83.4° West | ||||
Basis of coordinate: | based on nearby landmark | ||||
Geographic resolution: | outcrop |
Time
Period: | Neogene | Epoch: | Miocene |
Stage: | Serravallian | 10 m.y. bin: | Cenozoic 5 |
Key time interval: | Serravallian | ||
Age range of interval: | 13.82000 - 11.63000 m.y. ago | ||
Age estimate: | 12.4 Ma (Sr isotope) |
Stratigraphy
Geological group: | Alum Bluff | Formation: | Shoal River | ||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Shoal River Fm of the Alum Bluff, which lies between the Chipola Fm (Early Miocene) and the Chochtawatchee Fm [Early Pliocene). AGE: Early Miocene (Gardener 1947); Middle Miocene in Vokes (1990) and Portell et al. (2006), although Jones et al. (1993) reports 87Sr/86Sr ratios that yielded average age estimates of 12.4 Ma [=Serravalian]. STRATIGRAPHIC POSITION: From unknown position within formation. |
Lithology and environment
Primary lithology: | unlithified calcareous marl |
Secondary lithology: | unlithified calcareous sandstone |
Lithology description: marls, sands, clays, for the most part unconsolidated, in places highly calcareous | |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | field collection |
Reason for describing collection: | taxonomic analysis |
Museum repositories: | USGS |
Metadata
Database number: | 42891 | ||
Authorizer: | A. Miller | Enterer: | K. Layou |
Modifier: | A. Hendy | Research group: | GCP,marine invertebrate |
Created: | 2004-08-06 14:24:21 | Last modified: | 2012-12-05 21:03:18 |
Access level: | the public | Released: | 2004-08-06 14:24:21 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
11206. | J. R. Gardner. 1947. The Molluscan Fauna of the Alum Bluff Group of Florida. United States Geological Survey Professional Paper (142A-H)1-709 [A. Miller/K. Layou/A. Hendy] |