Fernvale - Wilson, 1949 (Ordovician of the United States)

Where: Wayne County, Tennessee (35.4° N, 88.0° W: paleocoordinates 26.9° S, 63.3° W)

• local area-level geographic resolution

When: Fernvale Formation, Ashgill (449.5 - 443.7 Ma)

• Richmondian

• formation-level stratigraphic resolution

Environment/lithology: sand shoal; lithified, intraclastic, shelly/skeletal grainstone and mudstone

• Geological information from field notes of S.M. Holland and M.E. Patzkowsky
• crinoidal to skeletal grainstone. thick bedded in some places; elsewhere medium to thin bedded and interbedded with green dolomitic mudstone. commonly contains flecks of glauconite; in places, cemented with hematite. locally displays large-scale trough cross-stratification. locally contains intraclasts of green dolomitic mudstone.

Preservation: original 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 5392: authorized by Steven Holland, entered by Steven Holland on 29.09.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• Wilson reprints list from Foerste (1903)
Show authors, comments, and common names
Gastropoda
 Euomphalina - Platyceratidae
Cyclonema bilix
Cyclonema bilix Conrad 1842 snail
Lingulata
 Lingulida - Obolidae
Lingulops cliftonensis
Rhynchonellata
 Orthida - Dalmanellidae
Dalmanella cf. jugosa
 Orthida - Plectorthidae
Hebertella sinuata
 Rhynchonellida - Rhynchotrematidae
"Rhynchotrema capax" = Hiscobeccus capax
"Rhynchotrema capax" = Hiscobeccus capax Conrad 1842
Strophomenata
 Strophomenida - Strophomenidae
"Strophomena planodorsata" = Tetraphalerella planodorsata
"Strophomena planodorsata" = Tetraphalerella planodorsata Winchell and Schuchert 1892
 Strophomenida - Rafinesquinidae
Rafinesquina alternata
 Strophomenida - Plectambonitidae
Plectambonites sericeus