Chasmatopora beds, Little River Valley: Ashbyan, Virginia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Paleocrinus cf. striatus
Billings
Pauorthis sp.
Rhombifera - Echinosphaeritidae
Echinosphaerites aurantium (Gyllenhaal 1772)
(Gyllenhal)
Strophomenata - Strophomenida - Sowerbyellidae
Sowerbyella aff. acquistriata (Willard 1928)
recombined as Sowerbyella (Sowerbyella) aequistriatus
(Willard)
Strophomenata - Strophomenida - Furcitellidae
Oepikina "minnesotensis" (Winchell 1881)
(Winchell)
? Leptaena aff. palustris Willard 1928
recombined as Dactylogonia palustris
Willard
? Rafinesquina cf. obsoleta Butts 1926
recombined as Dactylogonia obsoleta
Butts
Strophomenata - Strophomenida - Strophomenidae
Strophomena tennesseensis Willard 1928
recombined as Rhipidomena tennesseensis
Willard
Rhynchonellata - Orthida - Paurorthidae
Paurorthis sp. Schuchert and Cooper 1931
Rhynchonellata - Orthida - Plaesiomyidae
Dinorthis interstriata Willard 1928
Willard
Dinorthis cf. quadriplicata Willard 1928
synonym of Dinorthis transversa
Willard
Valcourea sp. Raymond 1911
Multicostella platys (Billings 1859)
(Billings)
Rhynchonellata - Orthida - Glyptorthidae
Glyptorthis bellarugosa (Conrad 1843)
(Conrad)
Rhynchonellata - Orthida - Plectorthidae
Mimella superba Butts 1942
synonym of Mimella globosa
Butts
Stenolaemata - Phylloporinidae
Chasmatopora sp. Eichwald 1860
Stenolaemata - Cryptostomata - Rhinidictyidae
Rhinidictya sp. Ulrich 1882
Stenolaemata - Cryptostomata - Ptilodictyidae
Phaenopora sp. Hall 1851
Stenolaemata - Cryptostomata - Escharoporidae
Graptodictya sp. Ulrich 1882
Demospongiae - Streptosolenidae
Eospongia varians
Billings
Hormogoneae - Oscillatoriales - Girvanellaceae
Rhodophyceae - Solenoporaceae
Solenopora compacta
(Billings)
unclassified
Tetradium sp. Dana 1846
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 4-5
Key time interval:Ashbyan
Age range of interval:457.00000 - 449.80000 m.y. ago
Stratigraphy
Formation:Benbolt Member:Burkes Garden Limestone
Stratigraphic resolution:member
Stratigraphy comments: Ashbyan, Chasmatopora beds
Lithology and environment
Primary lithology:yellow argillaceous,calcareous "limestone"
Includes fossils?Y
Lithology description: Nodular limestone, coarse-grained, argillaceous, calcareous, weathers light buff. 35 to 75 feet thick.
Environment:carbonate indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:33996
Authorizer:S. Holland Enterer:T. Hanson
Modifier:P. Wagner Research group:marine invertebrate
Created:2003-08-11 16:49:12 Last modified:2018-12-18 16:41:55
Access level:the public Released:2003-08-11 16:49:12
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]