Grier Ls Mbr, Lexington Ls, central KY, sec 61, switzer A (Ordovician of the United States)

Where: Kentucky (37.6° N, 84.8° W: paleocoordinates 28.1° S, 68.4° W)

• coordinate based on political unit

When: Grier Ls Member (Lexington Ls Formation), Middle Ordovician (470.0 - 458.4 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: limestone and shale

• EZ 2-3
• wavy, nodular, fossiliferous limestone and shale

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

PaleoDB collection 10745: authorized by Mark Patzkowsky, entered by Zack Krug on 18.06.2001

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Gastropoda
 Murchisoniina - Lophospiridae
Loxoplocus sp. Fischer 1885 snail
 Euomphalina - Holopeidae
cf. Cyclora sp. Hall 1845 snail
  -
cf. Microceras sp. Hall 1845 snail
Bivalvia
 Modiomorphida - Modiomorphidae
Colpomya sp. Ulrich 1893 clam
 Nuculida - Praenuculidae
Palaeoconcha sp. Miller 1889 clam
 Nuculida - Cardiolariidae
Deceptrix sp. Fuchs 1919 clam
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina sp. Hall and Clarke 1892
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
Rhynchotrema sp. Hall 1860
 Orthida - Plectorthidae
Hebertella sp. Hall and Clarke 1892
 Orthida - Platystrophiidae
 Atrypida - Anazygidae
Zygospira sp. Hall 1862
Stenolaemata
 Cystoporata - Constellariidae
Constellaria sp. Dana 1846
 Trepostomata - Heterotrypidae
Dekayia sp. Milne-Edwards and Haime 1851
 Trepostomata - Halloporidae
Hallopora sp. Bassler 1911
 Trepostomata - Aisenvergiidae
Eridotrypa sp. Ulrich 1893
 Trepostomida - Atactotoechidae
Cyphotrypa sp. Ulrich and Bassler 1904
Ostracoda
 Palaeocopida - Cryptophyllidae
 Hollinocopida - Tetradellidae
cf. Ceratopsis sp. Ulrich 1894 ostracod
 Beyrichicopida - Bolliidae
"Bollia" sp. Jones and Holl 1886 ostracod
Trilobita
 Phacopida - Calymenidae
Flexicalymene sp. Shirley 1936 trilobite