Offshore zone -13, Cedar Grove Quadrangle: Middle Ordovician - Late/Upper Ordovician, Georgia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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informal Cryptozoan sp.
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Monticulopora sp.
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Sibulites sp.
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Rostricellula rostrata
Ulrich and Cooper 1942
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| Ulrich & Cooper | ||||||||||
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Rhynchonellata
- Orthida
- Finkelnburgiidae
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Finkelnburgia sp.
(Walcott 1905)
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| original and current combination Orthis (Finkelnburgia) | ||||||||||
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Stenolaemata
- Trepostomata
- Halloporidae
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Callopora ? pulchella
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| replaced by Hallopora | ||||||||||
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceras sp.
Breynius 1832
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Gastropoda
- Murchisoniina
- Hormotomidae
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Hormotoma sp.
(Salter 1859)
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Gastropoda
- Murchisoniina
- Lophospiridae
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Lophospira sp.
Whitfield 1886
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Gastropoda
- Murchisoniina
- Subulitidae
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Hormotoma bellicincta
(Hall 1847)
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| recombined as Eroicaspira bellicincta | ||||||||||
| (Hall) | ||||||||||
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Gastropoda
- Euomphalina
- Macluritidae
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Maclurites sp.
Le Sueur 1818
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Gastropoda
- Euomphalina
- Raphistomatidae
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Raphistoma sp.
Hall 1847
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Gastropoda
- Euomphalina
- Ophiletidae
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Lecanospira sp.
Butts 1926
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Anthozoa
- Lichenariida
- Lichenariidae
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Lichenaria sp.
Winchell and Schuchert 1895
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Georgia | County: | Walker |
| Coordinates: | 34.7° North, 85.5° West (view map) | ||||
| Paleocoordinates: | 29.3° South, 67.5° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician |
| Key time interval: | Middle Ordovician - Late/Upper Ordovician |
| Age range of interval: | 470.00000 - 443.80000 m.y. ago |
Stratigraphy
| Stratigraphy comments: no information given |
Lithology and environment
| Primary lithology: | gray "limestone" |
| Secondary lithology: | brown "shale" |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: Light gray, fine-grained massively bedded limestone, somtimes dolomitic. Limestone mottled in shades of blue-gray, green, purple, pink, and yellow. Reddish-brown fissile shales. Red, yellow, and brown mottled sandy silts and silty clays. Light yellow, silty limestone. | |
| Environment: | offshore indet. |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 33333 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | T. Hanson | Research group: | marine invertebrate |
| Created: | 2003-07-27 14:50:05 | Last modified: | 2003-07-27 17:50:06 |
| Access level: | the public | Released: | 2003-07-27 14:50:05 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 8741. | A. T. Allen and J. G. Lester. 1957. Zonation of the Middle and Upper Ordovician strata in northwestern Georgia. Georgia State Division of Conservation, the Geological Survey Bulletin 66:1-104 [S. Holland/T. Hanson/T. Hanson] |