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 | |
Rhodophyceae | |
Demospongiae | |
Hindia sphaeroidalis Duncan 1879 demosponge | |
Stenolaemata | |
Rhynchonellata | |
Rhynchotrema increbescens Hall 1847 | |
Dalmanella cf. bassleri Foerste 1909 | |
Hebertella frankfortensis James 1871 | |
Strophomenata | |
Rafinesquina alternata Conrad 1838 | |
Lingulata | |
Tergomya | |
Archinacella patelliformis Hall 1847 | |
Cyrtolites retrorsus, "Microceras inornatum" = Cyrtolites inornatum
Cyrtolites retrorsus Ulrich and Scofield 1897
"Microceras inornatum" = Cyrtolites inornatum Hall 1845 | |
Cephalopoda | |
| |
Bivalvia | |
Ctenodonta obliqua Hall 1845 clam | |
Byssonychia intermedius Meek and Worthen 1868 clam | |
Lyrodesma sp. Conrad 1841 clam | |
Gastropoda | |
"Bellerophon clausus" = Sphenosphaera rogersensis
"Bellerophon clausus" = Sphenosphaera rogersensis Foerste 1914 snail | |
Bucania sp. Hall 1847 snail | |
"Cyclora minuta" = Cyclonema minuta
"Cyclora minuta" = Cyclonema minuta Hall 1845 snail | |
Cyclora pulcella snail | |
Hormotoma gracilis Hall 1847 snail | |
"Lophospira oweni" = Paupospira oweni
"Lophospira oweni" = Paupospira oweni Ulrich and Scofield 1897 snail |