Wardell Formation, Little RIver, Receptaculites beds (Ordovician of the United States)

Where: Tazewell County, Virginia (37.0° N, 81.7° W: paleocoordinates 29.6° S, 62.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Wardell Formation, Caradoc (458.4 - 449.5 Ma)

• Blackriveran, Receptaculites biconstrictus beds

• formation-level stratigraphic resolution

Environment/lithology: fine-grained, gray, argillaceous limestone

• 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.

Size class: macrofossils

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 34249: authorized by Steven Holland, entered by Tori Hanson on 22.08.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Hormogoneae
 Oscillatoriales - Girvanellaceae
Girvanella sp.
Girvanella sp. Nicholson and Etheridge 1878
 Rhombifera - Caryocystitidae
Caryocystites sp.
Crinoidea
 Porocrinida -
Carabocrinus sp.
Carabocrinus sp. Billings 1857 Sea lily
Stenolaemata
 Cystoporata - Ceramoporidae
Scenellopora radiata
Scenellopora radiata Ulrich 1882
Ulrich
 Cryptostomata - Escharoporidae
Escharopora ? subrecta, Graptodictya sp.
Escharopora ? subrecta Ulrich 1886
(Ulrich)
Graptodictya sp. Ulrich 1882
 Cryptostomata - Rhinidictyidae
Pachydictya sp.
Pachydictya sp. Ulrich 1882
 Trepostomata - Dittoporidae
Hemiphragma sp.
Hemiphragma sp. Ulrich 1893
 Trepostomata - Trematoporidae
Batostoma sevieri
Rhynchonellata
 Orthida - Draboviidae
? Pionodema subaequata
? Pionodema subaequata Conrad 1843
subsp. circularis (Winchell)
 Orthida - Plectorthidae
Mimella globosa
Mimella globosa Willard 1928
(Willard)
 Orthida - Plaesiomyidae
"Valcourea cf. deflecta" = Campylorthis deflecta
"Valcourea cf. deflecta" = Campylorthis deflecta Conrad 1843
(Conrad)
 Orthida - Glyptorthidae
Glyptorthis sp.
Glyptorthis sp. Foerste 1914
 Rhynchonellida - Trigonirhynchiidae
"? Camarotoechia plena" = Rostricellula plena
"? Camarotoechia plena" = Rostricellula plena Hall 1847
(Hall)
Strophomenata
 Strophomenida - Glyptomenidae
"Strophomena emaciata" = Pionomena emaciata
"Strophomena emaciata" = Pionomena emaciata Winchell and Schuchert 1892
Winchell and Schuchert
 Strophomenida - Strophomenidae
Strophomena ? incurvata
Strophomena ? incurvata Shephard 1838
(Shepard)
Bivalvia
 Cyrtodontida - Cyrtodontidae
Vanuxemia cf. crassa
Vanuxemia cf. crassa clam
(Ulrich)
Ostracoda
 Leperditicopida - Isochilinidae
Isochilina armata
Isochilina armata ostracod
(Walcott)
Trilobita
 Corynexochida - Illaenidae
"Illaenus conradi" = Thaleops conradi
"Illaenus conradi" = Thaleops conradi Billings 1859 trilobite
Billings
 Phacopida - Pterygometopidae
"Calliops cf. callicephalus" = Calyptaulax callicephalus
"Calliops cf. callicephalus" = Calyptaulax callicephalus Hall 1847 trilobite
(Hall)
Chlorophyceae
  - Receptaculitidae
Receptaculites biconstrictus