Wardell Formation, Tazewell, Receptaculites beds: Caradocian, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Hormogoneae
- Oscillatoriales
- Girvanellaceae
|
||||||||||
Girvanella sp.
Nicholson and Etheridge 1878
|
||||||||||
Chlorophyceae
- Receptaculitidae
|
||||||||||
Receptaculites biconstrictus
|
||||||||||
Ulrich | ||||||||||
Bivalvia
- Cyrtodontida
- Cyrtodontidae
|
||||||||||
Vanuxemia cf. crassa
|
||||||||||
Ulrich | ||||||||||
Strophomenata
- Strophomenida
- Strophomenidae
|
||||||||||
Strophomena ? incurvata
(Shephard 1838)
|
||||||||||
(Shepard) | ||||||||||
Strophomenata
- Strophomenida
- Glyptomenidae
|
||||||||||
Strophomena emaciata
Winchell and Schuchert 1892
|
||||||||||
recombined as Pionomena emaciata | ||||||||||
Winchell and Schuchert | ||||||||||
Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
|
||||||||||
? Camarotoechia plena
(Hall 1847)
|
||||||||||
recombined as Rostricellula plena | ||||||||||
(Hall) | ||||||||||
Rhynchonellata
- Orthida
- Plaesiomyidae
|
||||||||||
Valcourea cf. deflecta
(Conrad 1843)
|
||||||||||
recombined as Campylorthis deflecta | ||||||||||
(Conrad) | ||||||||||
Rhynchonellata
- Orthida
- Glyptorthidae
|
||||||||||
Glyptorthis sp.
Foerste 1914
|
||||||||||
Rhynchonellata
- Orthida
- Plectorthidae
|
||||||||||
Mimella globosa
(Willard 1928)
|
||||||||||
(Willard) | ||||||||||
Rhynchonellata
- Orthida
- Draboviidae
|
||||||||||
? Pionodema subaequata
(Conrad 1843)
|
||||||||||
subsp. circularis (Winchell) | ||||||||||
Stenolaemata
- Cystoporata
- Ceramoporidae
|
||||||||||
Scenellopora radiata
Ulrich 1882
|
||||||||||
Ulrich | ||||||||||
Stenolaemata
- Cryptostomata
- Rhinidictyidae
|
||||||||||
Pachydictya sp.
Ulrich 1882
|
||||||||||
Stenolaemata
- Cryptostomata
- Escharoporidae
|
||||||||||
Graptodictya sp.
Ulrich 1882
|
||||||||||
Escharopora ? subrecta
Ulrich 1886
|
||||||||||
(Ulrich) | ||||||||||
Stenolaemata
- Trepostomata
- Trematoporidae
|
||||||||||
Batostoma sevieri
|
||||||||||
Bassler | ||||||||||
Stenolaemata
- Trepostomata
- Dittoporidae
|
||||||||||
Hemiphragma sp.
Ulrich 1893
|
||||||||||
Ostracoda
- Leperditicopida
- Isochilinidae
|
||||||||||
Isochilina armata
|
||||||||||
(Walcott) | ||||||||||
Trilobita
- Corynexochida
- Illaenidae
|
||||||||||
Illaenus conradi
Billings 1859
|
||||||||||
recombined as Thaleops conradi | ||||||||||
Billings | ||||||||||
Trilobita
- Phacopida
- Pterygometopidae
|
||||||||||
Calliops cf. callicephalus
(Hall 1847)
|
||||||||||
recombined as Calyptaulax callicephalus | ||||||||||
(Hall) | ||||||||||
Crinoidea
- Porocrinida
|
||||||||||
Carabocrinus sp.
Billings 1857
|
||||||||||
Rhombifera
- Caryocystitidae
|
||||||||||
Caryocystites sp.
Buch 1844
|
||||||||||
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: | outcrop |
Time
Period: | Ordovician | Epoch: | Late/Upper Ordovician |
10 m.y. bin: | Ordovician 4 | ||
Key time interval: | Caradocian | ||
Age range of interval: | 460.90000 - 449.50000 m.y. ago |
Stratigraphy
Formation: | Wardell | ||||
Stratigraphic resolution: | formation | ||||
Stratigraphy comments: Blackriveran; Receptaculites biconstrictus beds |
Lithology and environment
Primary lithology: | fine,gray argillaceous "limestone" |
Includes fossils? | Y |
Lithology description: drab-gray fine-grained argillaceous limestones which weather nodular and bright buff, wavy seams of buff-weathering shale surround lenticular nodules of fairly pure, fine-grained limestone; the weathered limestone nodules form a loose rubble and, because of this nodular character, the contacts with overlying and undelying beds are sharp. | |
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: | 34251 | ||
Authorizer: | S. Holland | Enterer: | T. Hanson |
Modifier: | S. Holland | Research group: | marine invertebrate |
Created: | 2003-08-22 14:54:58 | Last modified: | 2005-03-19 17:12:16 |
Access level: | the public | Released: | 2003-08-22 14:54:58 |
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] |