On the Versailles and Troy Pike (Ordovician of the United States)

Also known as Curdsville Member, Woodford County, Kentucky

Where: Kentucky (38.1° N, 84.7° W: paleocoordinates 27.2° S, 63.2° W)

• coordinate based on political unit

• local area-level geographic resolution

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

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified packstone and lithified grainstone

Size class: macrofossils

Preservation: original calcite

Reposited in the USNM

Primary reference: R. S. Bassler. 1950. New genera of American Middle Ordovician "Cystoidea". Journal of the Washington Academy of Sciences 40(9):273-277 [S. Holland/S. Holland/S. Holland]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37908: authorized by Steven Holland, entered by Steven Holland on 27.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Comarocystitida - Amygdalocystitidae
"Billingsocystis invaginata n. gen. n. sp." = Amygdalocystites radiatus
"Billingsocystis invaginata n. gen. n. sp." = Amygdalocystites radiatus Billings 1854