USGS 7150 - Wagon bridge (Flint River Fm): Early/Lower Oligocene, Georgia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Lucinida
- Lucinidae
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Phacoides (Here) cf. wacissanus
Dall 1915
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Phacoides perovatus
Dall 1916
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris mississippiensis
(Conrad 1848)
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Gastropoda
- Cerithiidae
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Cerithium silicifluvium
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Georgia | County: | Decatur |
| Coordinates: | 30.9° North, 84.6° West (view map) | ||||
| Paleocoordinates: | 31.0° North, 78.1° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Early/Lower Oligocene | ||
| Age range of interval: | 33.90000 - 27.82000 m.y. ago |
Stratigraphy
| Formation: | Flint River | ||||
| Local section: | Wagon bridge | ||||
| Regional section: | Flint RIver | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: From lower bed. Assigned to Lower Oligocene (Rupelian) by Scott et al. 2001 following mapping by Cooke (1945). | |||||
Lithology and environment
| Primary lithology: | lithified cherty/siliceous "limestone" |
| Includes fossils? | Y |
| Lithology description: Limestone. Loose blocks of chert | |
| Environment: | shallow subtidal indet. |
| Geology comments: Shallow-water carbonate environment. | |
Taphonomy
| Modes of preservation: | cast,mold/impression,replaced with silica |
| Size of fossils: | macrofossils |
| Preservation of anatomical detail: | poor |
Collection methods and comments
| Collection methods: | selective quarrying,field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
| Collection method comments: Collected by Vaughan (1900) and Cooke and Mansfield (1914). Reposted in USNM collections. | |
| Taxonomic list comments:Exhaustive for mollusca; from fairly poorly preserved assemblage; many identifications and types based on casts and molds. | |
Metadata
| Also known as: | Station 7150 | ||
| Database number: | 60841 | ||
| Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
| Created: | 2006-05-24 21:01:18 | Last modified: | 2013-11-25 13:37:23 |
| Access level: | the public | Released: | 2006-05-24 21:01:18 |
| Creative Commons license: | CC BY | ||
Reference information
Primary reference:
| 17529. | W. H. Dall. 1916. A contribution to the invertebrate fauna of the Oligocene beds of Flint, River. Proceedings of the United States National Museum 51(2162):487-524 [A. Miller/A. Hendy] |