USGS 7785-CO. Southeast of Route 27 crossing of Kentucky River (Ordovician of the United States)

Where: Garrard County, Kentucky (37.8° N, 84.6° W: paleocoordinates 27.5° S, 63.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Curdsville Limestone Member (Lexington Limestone Formation), Turinian (460.9 - 449.5 Ma)

• "11-12 ft above base of Curdsville Limestone Member."

Environment/lithology: shallow subtidal; lithified limestone

• "marine transgression, with higher energy, shallow-water deposits grading upward into lower energy deposits."
• "The middle unit is present from 10 to 20 ft above the base of the member and consists of bioclastic calcarenite and calcirudite interbedded with calcsiltite and shale."

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Primary reference: G.P. Wahlman. 1992. Middle and Upper Ordovician symmetrical univalved mollusks (Monoplacophora and Bellerophontina) of the Cincinnati Arch region. United States Geological Survey Professional Paper 1066(O):1-123 [P. Wagner/P. Wagner/E. Ito]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 101378: authorized by Pete Wagner, entered by Hallie Street on 21.12.2010, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

 Strophomenida - Sowerbyellidae
 Strophomenida - Strophomenidae
 Rhynchonellida - Rhynchotrematidae
 Bellerophontida - Sinuitidae
Sinuites obesa Ulrich and Scofield 1897 snail
 Bellerophontida - Bucaniidae
Bucania subangulata Ulrich and Scofield 1897 snail
Salpingostoma kentuckyense Ulrich and Scofield 1897 snail
 Mitrata - Anomalocystitidae
Enoploura cf. punctata2 Bassler 1932
 Porocrinida -
Carabocrinus sp.2 Billings 1857 Sea lily
 Hybocrinida - Hybocystitidae
Hybocystites problematicus2 Wetherby 1880 Sea lily