USGS 3383 - Little Horseshoe Bend (Flint River Fm): Early/Lower Oligocene, Georgia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Turritellidae
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Turritella tampae
Heilprin 1887
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Gastropoda
- Ampullinidae
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Ampullina streptostoma
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Gastropoda
- Cassidae
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Cassis inornatus
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Gastropoda
- Neogastropoda
- Mitridae
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Mitra syra
Dall 1915
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Gastropoda
- Liotiidae
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? Liotia persculpturata
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Bivalvia
- Arcida
- Glycymerididae
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Glycymeris mississippiensis
(Conrad 1848)
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Bivalvia
- Arcida
- Arcidae
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Barbatia (Calloarca) cuculloides
(Conrad 1833)
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Echinoidea
- Clypeasteroida
- Fibulariidae
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Echinocyamus vaughani
Clark and Twitchell 1915
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Clark and Twitchell 1915 | ||||||
| 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 | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: From upper bed. Assigned to Lower Oligocene (Rupelian) by Scott et al. 2001 following mapping by Cooke (1945). | |||||
Lithology and environment
| Primary lithology: | lithified "reef rocks" |
| Includes fossils? | Y |
| Lithology description: Limestone, also referred to as fossil coral reef. | |
| 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: | field collection |
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
| Collection method comments: Collected by T.W. Vaughan (1900). 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 3383 | ||
| Database number: | 60825 | ||
| Authorizer: | A. Hendy, M. Uhen | Enterer: | A. Hendy, M. Uhen |
| Modifier: | M. Uhen | Research group: | marine invertebrate |
| Created: | 2006-05-24 20:38:08 | Last modified: | 2019-09-13 16:34:28 |
| Access level: | the public | Released: | 2006-05-24 20:38:08 |
| 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] |
Secondary references:
| 16640 | W. B. Clark and M. W. Twitchell. 1915. The Mesozoic and Cenozoic Echinodermata of the United States. United States Geological Survey Bulletin 54:1-341 [L. Villier/J. Millet/M. Uhen] | |
| 32917 | C. W. Cooke. 1942. Cenozoic irregular echinoids of the Eastern United States. Journal of Paleontology 16:1-62 [L. Villier/L. Villier] |