Benbolt Formation, Shannondale Member, Thompson Valley: Caradoc, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Ptychoglyptus sp.
Willard 1928
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Strophomenata
- Strophomenida
- Furcitellidae
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Oepikina "minnesotensis"
(Winchell 1881)
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| (Winchell) | ||||||||||
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Strophomenata
- Strophomenida
- Strophomenidae
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Strophomena tennesseensis
Willard 1928
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| recombined as Rhipidomena tennesseensis | ||||||||||
| Willard | ||||||||||
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Rhynchonellata
- Pentamerida
- Camerellidae
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Camerella varians
Billings 1859
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| Billings [entered as Camarella varians] | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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"Camarotoechia" cf. pristina
Raymond 1905
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| recombined as Rostricellula pristina | ||||||||||
| Raymond | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Sphenotretidae
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Zygospira cf. acutirostris
(Hall 1847)
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| recombined as Sphenotreta acutirostris | ||||||||||
| (Hall) | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Camarotoechiidae
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Camarotoechia quadriplicata
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| Willard | ||||||||||
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Rhynchonellata
- Orthida
- Glyptorthidae
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Glyptorthis bellarugosa
(Conrad 1843)
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| (Conrad) | ||||||||||
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Rhynchonellata
- Orthida
- Plectorthidae
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Mimella melonica
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| (Willard) | ||||||||||
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Stenolaemata
- Trepostomida
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Nicholsonella sp.
Ulrich 1890
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Gastropoda
- Euomphalina
- Macluritidae
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Maclurites magnus
(Le Sueur 1818)
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| Lesueur | ||||||||||
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Demospongiae
- Streptosolenidae
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Eospongia roemeri
Billings 1861
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| Billings | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Virginia | County: | Tazewell |
| Coordinates: | 37.0° North, 81.6° West (view map) | ||||
| Paleocoordinates: | 29.6° South, 61.9° 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: | Benbolt | Member: | Shannondale Limestone | ||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: Ashbyan | |||||
Lithology and environment
| Primary lithology: | gray cherty/siliceous "limestone" |
| Includes fossils? | Y |
| Lithology description: medium-bedded, coarse-grained, dark bluish-gray, sparsely cherty limestones | |
| 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: | 33936 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | S. Holland | Research group: | marine invertebrate |
| Created: | 2003-08-08 14:30:32 | Last modified: | 2024-03-31 19:20:47 |
| Access level: | the public | Released: | 2003-08-08 14:30:32 |
| 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] |