Bigby-Cannon (Bigby) - Wilson, 1949 (Ordovician of the United States)

Where: Tennessee (35.5° N, 86.5° W: paleocoordinates 28.1° S, 66.4° W)

• basin-level geographic resolution

When: Bigby Member (Bigby-Cannon Limestone Formation), Shermanian (457.3 - 449.6 Ma)

• member-level stratigraphic resolution

Environment/lithology: sand shoal; shelly/skeletal grainstone

• Geologic information from field notes of S.M. Holland and M.E. Patzkowsky
• thin to medium bedded skeletal grainstones, highly phosphatic, prominently cross-bedded.

Preservation: original calcite, replaced with calcite

Primary reference: C. W. Wilson. 1949. Pre-Chattanooga stratigraphy in Central Tennessee. Tennessee Division of Geology Bulletin 56:1-415 [S. Holland/S. Holland]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5352: authorized by Steven Holland, entered by Steven Holland on 27.09.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• Faunal list taken by Wilson from Bassler (1932)
Show authors, comments, and common names
unclassified
  -
Cliophorus fabula
Rhodophyceae
  - Solenoporaceae
Solenopora compacta
Tergomya
 Archinacellida - Archinacellidae
Archinacella patelliformis
 Cyrtonellida - Cyrtolitidae
"Microceras inornatum" = Cyrtolites inornatum, Cyrtolites retrorsus
"Microceras inornatum" = Cyrtolites inornatum Hall 1845
Cyrtolites retrorsus Ulrich and Scofield 1897
Cephalopoda
 Actinocerida - Actinoceratidae
Actinoceras cuvieri
Actinoceras cuvieri
(A. capitolinum Safford)
Gastropoda
 Euomphalina - Platyceratidae
"Cyclora minuta" = Cyclonema minuta
"Cyclora minuta" = Cyclonema minuta Hall 1845 snail
 Euomphalina - Holopeidae
Cyclora pulcella
 Bellerophontida - Bellerophontidae
"Bellerophon clausus" = Sphenosphaera rogersensis
"Bellerophon clausus" = Sphenosphaera rogersensis Foerste 1914 snail
 Bellerophontida - Bucaniidae
Bucania sp.
Bucania sp. Hall 1847 snail
 Murchisoniina - Lophospiridae
"Lophospira oweni" = Paupospira oweni
"Lophospira oweni" = Paupospira oweni Ulrich and Scofield 1897 snail
 Murchisoniina - Hormotomidae
Hormotoma gracilis
Hormotoma gracilis Hall 1847 snail
Bivalvia
 Solemyida - Ctenodontidae
Ctenodonta subrotunda, Ctenodonta obliqua
Ctenodonta obliqua Hall 1845 clam
 Unioni - Lyrodesmatidae
Lyrodesma sp.
Lyrodesma sp. Conrad 1841 clam
 Myalinida - Ambonychiidae
Byssonychia intermedius
Byssonychia intermedius Meek and Worthen 1868 clam
Lingulata
 Lingulida - Obolidae
Lingulops norwoodi
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
Rhynchotrema increbescens
 Orthida - Plectorthidae
Hebertella frankfortensis
 Orthida - Dalmanellidae
Dalmanella cf. bassleri
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina alternata
Stenolaemata
 Trepostomata - Aisenvergiidae
Eridotrypa briareus
 Cystoporata - Constellariidae
Constellaria teres
Demospongiae
 Streptosclerophorida - Hindiidae
Hindia sphaeroidalis
Hindia sphaeroidalis Duncan 1879 demosponge