Cliffield Formation, Ward Cove Member, Thompson Valley (upper part): Ashbyan, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Nidulites pyriformis
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| synonym of Mastopora | ||||||||||
| Bassler | ||||||||||
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Trilobita
- Asaphida
- Remopleurididae
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Remopleurides sp.
Portlock 1843
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Trilobita
- Asaphida
- Asaphidae
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Homotelus sp.
Raymond 1920
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| synonym of Isotelus | ||||||||||
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Niobe sp.
Angelin 1851
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Trilobita
- Trinucleida
- Raphiophoridae
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Ampyx sp.
(Dalman 1827)
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| original and current combination Asaphus (Ampyx) | ||||||||||
| [entered as Ampux sp.] | ||||||||||
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Trilobita
- Phacopida
- Pterygometopidae
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Calliops cf. gracilens
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| (Raymond) | ||||||||||
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Calliops annulatus
(Raymond 1905)
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| (Raymond) | ||||||||||
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unclassified
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Brachiopoda indet.
Cuvier 1805
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| Willard; [Oxoplecia holstonensis] | ||||||||||
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Lingulata
- Lingulida
- Obolidae
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Lingula cf. nympha
Billings 1865
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| recombined as Ectenoglossa nympha | ||||||||||
| Billings | ||||||||||
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Lingulata
- Siphonotretida
- Siphonotretidae
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Schizambon cuneatus
Willard 1928
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| Willard | ||||||||||
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Strophomenata
- Orthotetida
- Triplesiidae
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Oxoplecia holstonensis
Willard 1928
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| Willard; [Oxoplecia hostonensis] | ||||||||||
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Sowerbyella cf. delicatula
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| (Butts) | ||||||||||
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Sowerbyella cf. aequistriata
(Willard 1928)
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| recombined as Sowerbyella (Sowerbyella) aequistriatus | ||||||||||
| (Willard) | ||||||||||
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Gastropoda
- Murchisoniina
- Lophospiridae
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Lophospira perangulata
(Hall 1847)
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| (Hall) | ||||||||||
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Gastropoda
- Euomphalina
- Lesueurillidae
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Eccyliopterus sp.
Remelé 1888
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Virginia | County: | Tazewell |
| Coordinates: | 37.1° North, 81.5° West (view map) | ||||
| Paleocoordinates: | 29.6° South, 61.8° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | local area |
Time
| Period: | Ordovician | Epoch: | Late Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| Key time interval: | Ashbyan | Other zone: | Nidulites pyriformis |
| Age range of interval: | 457 - 449.8 m.y. ago |
Stratigraphy
| Formation: | Cliffield | Member: | Ward Cove Limestone | ||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: Ashbyan or Whiterockian, Nidulites zone, upper part
Darriwillian. | |||||
Lithology and environment
| Primary lithology: | gray argillaceous "limestone" |
| Includes fossils? | Y |
| Lithology description: Limestone, gray, argillaceous, and shaly; may be nodular. | |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body,cast |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 33532 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2003-08-01 21:43:26 | Last modified: | 2018-12-27 20:46:21 |
| Access level: | the public | Released: | 2003-08-01 21:43:26 |
| 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] |
Secondary references:
| 44678 | G. A. Cooper. 1956. Chazyan and related brachiopods. Smithsonian Miscellaneous Collections 127:1-1245 [P. Wagner/P. Wagner] |