Brannon Mbr., 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: Brannon Member (Lexington Limestone Formation), Chatfieldian (460.9 - 449.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore ramp; lithified, shelly/skeletal, gray, argillaceous lime mudstone and lithified, calcareous shale

• 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 34550: authorized by Steven Holland, entered by Steven Holland on 09.09.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Stenolaemata
 Trepostomida -
 Trepostomata - Atactotoechidae
 Trepostomata - Heterotrypidae
Heterotrypa sp. Nicholson 1879
 Trepostomata - Halloporidae
Hallopora sp. Bassler 1911
 Trepostomata - Dittoporidae
 Trepostomata - Monticuliporidae
 Trepostomata - Trematoporidae
Eridotrypa sp. Ulrich 1893
Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina sp. Hall and Clarke 1892
Rhynchonellata
 Atrypida - Anazygidae
Zygospira sp. Hall 1862
 Orthida - Plectorthidae