MGS #46: Rupelian, Mississippi
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Neogastropoda
- Mitridae
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Mitra conquista
|
MacNeil and Dockery 1984 | |||||||||
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Mitra (Fusimitra) conquisita
Conrad 1848
|
Dockery 1980 | |||||||||
| recombined as Fusimitra conquisita | ||||||||||
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Gastropoda
- Neogastropoda
- Volutidae
|
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Caricella reticulata
|
MacNeil and Dockery 1984 | |||||||||
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Caricella (Atraktus) reticulata
|
Dockery 1980 | |||||||||
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Gastropoda
- Ranellidae
|
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Sassia conradiana
|
Dockery 1980 | |||||||||
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Bivalvia
- Pectinida
- Pectinidae
|
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Pecten perplanus
Morton 1833
|
14 individuals | |||||||||
| recombined as Pecten (Pecten) perplanus | ||||||||||
| C category | ||||||||||
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Bivalvia
- Arcida
- Arcidae
|
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Scapharca invidiosa
(Casey 1903)
|
7 individuals | |||||||||
| R category | ||||||||||
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Bivalvia
- Arcida
- Glycymerididae
|
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Glycymeris intercostata
(Gabb 1860)
|
8 individuals | |||||||||
| R category | ||||||||||
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Bivalvia
- Cardiida
- Cardiidae
|
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Agnocardia glebosum
(Conrad 1848)
|
1 individual | |||||||||
| R category | ||||||||||
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Nemocardium eocenense
(Meyer 1887)
|
3 individuals | |||||||||
| R category | ||||||||||
|
Bivalvia
- Cardiida
- Ungulinidae
|
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Timothynus turgida
(Conrad 1848)
|
1 individual | |||||||||
| R category | ||||||||||
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Bivalvia
- Cardiida
- Veneridae
|
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Pitar aldrichi n. sp.
|
15 individuals | |||||||||
| C category | ||||||||||
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Bivalvia
- Pholadida
- Corbulidae
|
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Tiza alta
|
A category | |||||||||
| 100+ valves collected | ||||||||||
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Corbula engonata
Conrad 1848
|
1 individual | |||||||||
| R category | ||||||||||
|
Bivalvia
- Lucinida
- Lucinidae
|
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Myrtea scopularis
(Casey 1903)
|
2 individuals | |||||||||
| R category | ||||||||||
|
Bivalvia
- Carditida
- Carditidae
|
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Venericardia carsonensis
Dall 1903
|
2 individuals | |||||||||
| recombined as Venericardia (Rotundicardia) carsonensis | ||||||||||
| R category | ||||||||||
|
Bivalvia
- Carditida
- Astartidae
|
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Astarte triangulata
Meyer 1886
|
2 individuals | |||||||||
| R category | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Mississippi | County: | Clarke |
| Coordinates: | 31.8° North, 88.8° West (view map) | ||||
| Paleocoordinates: | 32.1° North, 82.3° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| *Period: | Early/Lower Tertiary | *Epoch: | Early/Lower Oligocene |
| *International age/stage: | Early/Lower Rupelian - Early/Lower Rupelian | ||
| Key time interval: | Rupelian | ||
| Age range of interval: | 33.90000 - 27.82000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Red Bluff | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: The Red Bluff Formation as exposed in Clarke and Wayne counties,Mississippi, consists of fossiliferous, dark gray, silty clay with zones of ironstone concretions in the lower part. These sediments disconformably overlie the blue-gray, blocky, marine clay of the Shubuta clay member of the yazoo Formation and were deposited in shallow marine shelf, prodelta, and marginal delta bay enviroments. | |||||
Lithology and environment
| Primary lithology: | gray silty,sandy siltstone | ||
| Secondary lithology: | ironstone | ||
| Includes fossils? | Y | ||
| Includes fossils? | Y | ||
| Environment: | offshore | Tectonic setting: | passive margin |
Taphonomy
| Modes of preservation: | body,original aragonite,original calcite |
| Size of fossils: | mesofossils |
Collection methods and comments
| Collection excludes: | all microfossils,some macrofossils |
| Collection methods: | bulk,mechanical,field collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: Bivalves only | |
| Taxonomic list comments:List is done in catagory form. 1-9 valves collected of smae species = "R" for rare. 10-99 valves collected = "C" for common. 100+ valves collected = "A" for abundant. Categories are listed in the comments field, absolute abundances are given in the abundance field.
Since taxa with greater than 99 specimens were not counted with absolute abundances, these were reported with category "A" for abundant. | |
Metadata
| Database number: | 5788 | ||
| Authorizer: | L. Ivany, J. Sessa | Enterer: | S. DeLong, L. Eccles |
| Modifier: | L. Eccles | Research group: | GCP,marine invertebrate |
| Created: | 1999-12-02 13:01:51 | Last modified: | 2010-12-21 14:52:04 |
| Access level: | the public | Released: | 1999-12-02 13:01:51 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 323. | D. T. Dockery. 1982. Lower Oligocene Bivalvia of the Vicksburg Group in Mississippi. Mississippi Department of Natural Resources Bureau of Geology 123:1-261 [L. Ivany/S. DeLong/M. Uhen] |
Secondary references:
| 11842 | D. T. Dockery. 1980. Invertebrate Macropaleontolgy of the Clarke County Mississippi Area. Bulletin - Mississippi Geological, Economic and Topographic Survey 122 [M. Kosnik/M. Kosnik/L. Eccles] | |
| 447 | F. S. MacNeil and D. T. Dockery. 1984. Lower Oligocene Gastropoda, Scaphopoda, and Cephalopoda of the Vicksburg Group in Mississippi. Mississippi Department of Natural Resources, Bureau of Geology Bulletin 124:1-415 [L. Ivany/E. Kowalski/P. Wagner] |