Perryville Mbr. (Salvisa Bed), Lexington Limestone, Kentucky (Ordovician of the United States)

Where: Kentucky (38.0° N, 84.7° W: paleocoordinates 27.3° S, 63.2° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Salvisa Member (Lexington Limestone Formation), Chatfieldian (460.9 - 449.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: peritidal; lithified, gray lime mudstone and lithified, brown, gray lime mudstone

• environmental call based on field notes of Holland and Patzkowsky

Size class: macrofossils

Preservation: original calcite

Reposited in the USNM

Primary reference: E. R. Cressman. 1973. Lithostratigraphy and depositional environments of the Lexington Limestone (Ordovician) of central Kentucky. USGS Professional Paper 768:1-61 [M. Patzkowsky/M. Patzkowsky/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 34555: authorized by Steven Holland, entered by Steven Holland on 09.09.2003, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Palaeocopida -
 Leperditicopida - Leperditiidae
"Isochilina cf. ampla" = Leperditia (Isochilina) ostracod
Rostroconchia
 Conocardiida - Bransoniidae
Pojetaconcha cressmani Pojeta and Runnegar 1976
Bivalvia
 Cyrtodontida - Cyrtodontidae
 Myalinida - Ambonychiidae
Ambonychia sp. Hall 1847 clam
 Modiomorphida - Modiomorphidae
Colpomya cf. faba Hall 1847 clam
 Protobranchia - Ctenodontidae
 Nuculida - Cardiolariidae
Deceptrix sp. Fuchs 1919 clam
 Protobranchia - Malletiidae
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina sp. Hall and Clarke 1892
Rhynchonellata
 Atrypida - Protozygidae
? Protozyga sp. Hall and Clarke 1893
 Atrypida - Anazygidae
Zygospira sp. Hall 1862
 Rhynchonellida - Rhynchotrematidae
 Orthida - Plectorthidae