Witten Limestone, south of Shannondale (calcilutyte): Caradoc, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Florideophyceae
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Tetradium fibratum
Safford 1856
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| recombined as Prismostylus fibratum | ||||||||||
| Safford | ||||||||||
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unclassified
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Tetradium cellulosum
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| (Hall) | ||||||||||
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Tetradium ? clarki
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| Okulitch | ||||||||||
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Demospongiae
- Sigmatosclerophorida
- Dystactospongiidae
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Dystactospongia minor
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| Ulrich and Everett | ||||||||||
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Stromatoporoidea
- Labechiida
- Lophiostromatidae
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Dermatostroma sp.
Parks 1910
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Gastropoda
- Murchisoniina
- Subulitidae
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Subulites regularis
Ulrich and Scofield 1897
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| Ulrich and Scofield | ||||||||||
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Gastropoda
- Euomphalina
- Helicotomidae
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Helicotoma cf. verticalis
Ulrich and Scofield 1897
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| Ulrich | ||||||||||
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Gastropoda
- Euomphalina
- Macluritidae
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Maclurites bigsbyi
(Hall 1861)
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| recombined as Maclurina bigsbyi | ||||||||||
| (Hall) | ||||||||||
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceras multicameratum
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| Emmons | ||||||||||
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Trilobita
- Phacopida
- Pterygometopidae
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Calyptaulax confluens
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| (Foerste) | ||||||||||
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Calliops callicephalus
(Hall 1847)
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| recombined as Calyptaulax callicephalus | ||||||||||
| (Hall) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Virginia | County: | Tazewell |
| Coordinates: | 37.2° North, 81.4° West (view map) | ||||
| Paleocoordinates: | 29.6° South, 61.6° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| Key time interval: | Caradoc | ||
| Age range of interval: | 458.40000 - 449.60000 m.y. ago |
Stratigraphy
| Formation: | Witten Limestone | ||||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Blackriveran | |||||
Lithology and environment
| Primary lithology: | desiccation cracks,gray argillaceous "limestone" |
| Includes fossils? | Y |
| Lithology description: Thin-bedded taupe-gray calcilutytes, argillaceous, mud cracks are abundant, and the zone contains lenses of edgewise conglomerate produced by partial reworking of desiccated lime muds. | |
| Environment: | carbonate indet. |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 34272 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | S. Holland | Research group: | marine invertebrate |
| Created: | 2003-08-25 13:40:37 | Last modified: | 2024-03-31 19:20:47 |
| Access level: | the public | Released: | 2003-08-25 13:40:37 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 8880. | B. N. Cooper and C. E. Prouty. 1943. Stratigraphy of the Lower Middle Ordovician of Tazewell County, Virginia. Bulletin of the Geological Society of America 54:819-886 [S. Holland/T. Hanson/T. Hanson] |