Cliffield Formation Lincolnshire Limestone Member, Pounding Mill Branch: Caradoc, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Strophomenata
- Strophomenida
- Syndielasmatidae
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Sowerbyites (Plectambonites) triseptatus
(Willard 1928)
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| (Willard) | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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"Camarotoechia" pristina
Raymond 1905
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| recombined as Rostricellula pristina | ||||||||||
| Raymond | ||||||||||
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Rhynchonellata
- Orthida
- Plaesiomyidae
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Dinorthis atavoides
Willard 1928
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| Willard | ||||||||||
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Stenolaemata
- Trepostomida
- Amplexoporidae
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Monotrypa sp.
Nicholson 1879
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Stenolaemata
- Trepostomida
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Nicholsonella sp.
Ulrich 1890
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Stenolaemata
- Cryptostomata
- Arthrostylidae
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Glauconome sp.
Goldfuss 1826
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Stenolaemata
- Cryptostomata
- Rhinidictyidae
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Pachydictya robusta
Ulrich 1882
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| Ulrich | ||||||||||
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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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Trilobita
- Asaphida
- Asaphidae
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Homotelus cf. elongatus
Raymond 1920
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| Raymond | ||||||||||
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Demospongiae
- Streptosolenidae
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Eospongia sp.
Billings 1861
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Virginia | County: | Tazewell |
| Coordinates: | 37.1° North, 81.7° West (view map) | ||||
| Paleocoordinates: | 29.5° 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: | Cliffield | Member: | Lincolnshire Limestone | ||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: Ashbyan or Whiterockian | |||||
Lithology and environment
| Primary lithology: | black,gray "limestone" |
| Includes fossils? | Y |
| Lithology description: Brownish-gray to black, medium-grained, irregularly bedded limestone averaging 60 feet thick. Nearly all beds contain nodules of dense black chert. Wavy bituminous clayey streaks mark the bedding and cause the beds to weather cobbly. Some layers near the base develop a "worm-eaten" appearance, as clayey stringers are dissolved. | |
| 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: | 33526 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | S. Holland | Research group: | marine invertebrate |
| Created: | 2003-08-01 19:16:20 | Last modified: | 2024-03-31 19:20:47 |
| Access level: | the public | Released: | 2003-08-01 19:16:20 |
| 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] |