Nearshore zone +1, Villanow Quadrangle, Dug Gap Road: Caradoc, Georgia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Rhynchonellida
- Ancistrorhynchidae
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Ancistrorhyncha costata
Ulrich and Cooper 1942
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| Ulrich & Cooper | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Orthorhynchulidae
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Orthorhynchula linneyi
(James 1881)
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| James | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Rhynchotrematidae
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Rhynchotrema minnesotensis
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| Sandeson | ||||||||||
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Rhynchotrema increbescens
(Hall 1847)
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| Hall | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Camarotoechiidae
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Camarotoechia sp.
Hall and Clarke 1893
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Rhynchonellata
- Atrypida
- Anazygidae
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Zygospira recurvirostris
(Hall 1847)
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| recombined as Anazyga recurvirostra | ||||||||||
| Hall | ||||||||||
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Sowerbyella sp.
Jones 1928
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Georgia | County: | Whitfield |
| Coordinates: | 34.7° North, 85.0° West (view map) | ||||
| Paleocoordinates: | 29.5° South, 66.0° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| *Period: | Middle Ordovician - Late/Upper Ordovician | ||
| Key time interval: | Caradoc | ||
| Age range of interval: | 458.40000 - 449.60000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Stratigraphy comments: No information given. |
Lithology and environment
| Primary lithology: | red,yellow siltstone |
| Secondary lithology: | yellow sandstone |
| Includes fossils? | Y |
| Lithology description: \"The upper one-fourth of the zone is composed of red to yellow siltstone with an occasional mottled bed showing purplish splotches. A fine-grained, buff-colored sandstone occurs about 45 feet below the top of the zone. The middle part of the zone is composed of red siltstone. The lower half of the zone is composed of red and yellow alternating beds of thinly laminated siltstone. About 5 feet above the base occurs a fossil horizon containing both identifiable and unidentifiable fragments of brachiopods and bryozoa. The lowest member of the zone is a bed of medium-grained yellowish sandstone about 2 to 4 feet thick. In some sections small pebbles randomly scattered through it give it a loose conglomeratic texture." | |
| Environment: | shallow subtidal indet. |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | difficult macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 32457 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | S. Holland | Research group: | marine invertebrate |
| Created: | 2003-07-01 14:05:31 | Last modified: | 2004-10-20 09:27:39 |
| Access level: | the public | Released: | 2003-07-01 14:05:31 |
| 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] |