GRa-1, Grier Cave: Danian, Georgia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Echinoidea
- Cassiduloida
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Gitolampas georgiensis
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1 specimen | |||||||||
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Echinoidea
- Spatangoida
- Schizasteridae
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Linthia sp.
Desor 1853
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1 specimen | |||||||||
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Cephalopoda
- Nautilida
- Hercoglossidae
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Hercoglossa ulrichi
(White 1882)
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3 specimens | |||||||||
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Gastropoda
- Turritellidae
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Turritella alabamiensis
(De Gregorio 1890)
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1 specimen | |||||||||
| recombined as Mesalia alabamiensis | ||||||||||
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Gastropoda
- Naticidae
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Natica sp.
Scopoli 1777
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1 specimen | |||||||||
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Bivalvia
- Carditida
- Crassatellidae
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cf. Crassatella ioannes
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1 specimen | |||||||||
| originally entered as "Crassatella cf. C. ioannes" | ||||||||||
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Bivalvia
- Carditida
- Carditidae
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Venericardia smithii
Aldrich 1894
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2 specimens | |||||||||
| recombined as Venericardia (Venericor) smithii | ||||||||||
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Bivalvia
- Ostreida
- Ostreidae
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Ostrea sp.
Linnaeus 1758
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5 specimens | |||||||||
| originally entered as "Ostrea spp." | ||||||||||
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Ostrea crenulimarginata
Gabb 1860
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3 specimens | |||||||||
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Bivalvia
- Arcida
- Cucullaeidae
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Cucullaea sp.
Lamarck 1801
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2 specimens | |||||||||
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Rhynchonellata
- Terebratulida
- Cancellothyrididae
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Terebratulina brundidgensis
Aldrich 1907
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2 specimens | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Georgia | County: | Randolph |
| Coordinates: | 31.9° North, 84.8° West (view map) | ||||
| Paleocoordinates: | 34.4° North, 64.8° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Paleogene | Epoch: | Paleocene |
| Stage: | Danian | 10 m.y. bin: | Cenozoic 1 |
| *Period: | Tertiary | ||
| Key time interval: | Danian | ||
| Age range of interval: | 66.00000 - 61.60000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Clayton | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Clayton spans most of Danian, including nanofossil zones NP1, NP2, and NP3; foram zones P1a and P1c (absence of P1b attributed to ecological factors rather than a hiatus, by Schulte & Speijer, 2009). | |||||
Lithology and environment
| Primary lithology: | not reported |
| Lithology description: Much of the formation is composed of calcareous sandstones, but also marls and sandy packstones. | |
| Environment: | marine indet. |
| Geology comments: Clayton primarily represents littoral (foreshore) and inner and middle neritic (offshore transition zone). The majority of the thickness likely represents offshore transition, with some shoreface settings, but with no stratigraphic or lithologic information this collection cannot be assigned an environment. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 2832 | ||
| Authorizer: | M. Patzkowsky | Enterer: | K. Layou |
| Modifier: | M. Clapham | Research group: | GCP,marine invertebrate |
| Created: | 1999-07-21 10:05:13 | Last modified: | 2019-08-06 21:26:39 |
| Access level: | the public | Released: | 1999-07-21 10:05:13 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 124. | L. D. Toulmin. 1977. Stratigraphic Distribution of Paleocene and Eocene Fossils in the Eastern Gulf Coast Region. Geological Survey of Alabama, Monograph 13(1):1-602 [M. Patzkowsky/K. Layou/P. Mannion] |
Secondary references:
| 29915 | J. A. Sessa, T. J. Bralower, M. E. Patzkowsky, J. C. Handley, and L. C. Ivany. 2012. Environmental and biological controls on the diversity and ecology of Late Cretaceous through early Paleogene marine ecosystems in the US Gulf Coastal Plain. Paleobiology 38(2):218-239 [M. Patzkowsky/J. Sessa/J. Sessa] |