Port New Richey [Tampa Limestone]: Chattian - Aquitanian, Florida
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Turritellidae
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Potamides (Pyrazisinus) cornutus
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| original and current combination Pyrazisinus | |||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Florida | County: | Pasco |
| Coordinates: | 28.2° North, 82.7° West (view map) | ||||
| Paleocoordinates: | 28.5° North, 77.9° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Key time interval: | Chattian - Aquitanian |
| Age range of interval: | 27.82000 - 20.44000 m.y. ago |
Stratigraphy
| Geological group: | Hawthorn | Formation: | Arcadia | Member: | Tampa Limestone |
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: LITHOSTRATIGRAPHY: Formerly referred to as the Tampa Limestone. Scott et al. (2001) assign the Tampa to the rank of member and place it in the Arcadia Formation. AGE: Mansfield suggests age equivalencies (based primarily on faunal similarities) with the Chipola Fm., the Trent Marl of North Carolina, and the Anguilla Fm. of Anguilla. Placed here into the Chattian-Aquitanian on the basis of most recent chronostratigraphy. | |||||
Lithology and environment
| Primary lithology: | white lithified sandy,cherty/siliceous "limestone" |
| Includes fossils? | Y |
| Lithology description: The Tampa LS member of the Arcadia Fm. is more quartz sand rich and poorer in calcium carbonate than the underlying Suwannee LS. Fossils are often preserved via silicification and can be found in fully replaced, partially replaced or unaltered states. From several localities, a buff to dirty limestone matrix is reported, speckled with quartz sand grains of medium size. | |
| Environment: | shallow subtidal indet. |
| Geology comments: Sand size quartz grains and an abundance of freshwater molluscs in the Tampa Limestone indicate nearshore deposition. | |
Taphonomy
| Modes of preservation: | body,cast,mold/impression,permineralized,replaced with silica |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection excludes: | all microfossils |
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Taxonomic list comments:Occurrence based data only | |
Metadata
| Also known as: | Mansfield station #7 | ||
| Database number: | 61071 | ||
| Authorizer: | A. Miller | Enterer: | C. Ferguson |
| Modifier: | A. Hendy | Research group: | GCP,marine invertebrate |
| Created: | 2006-05-29 13:59:47 | Last modified: | 2012-12-05 23:20:29 |
| Access level: | the public | Released: | 2006-05-29 13:59:47 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 17425. | W. C. Mansfield. 1937. Molluscs of the Tampa and Suwannee Limestones. Geological Bulletin, State of Florida Department of Conservation 15:1-334 [A. Miller/C. Ferguson/P. Wagner] |