USGS D-1196-CO. Eastbound lanes of I-64, east of bridge over Kentucky River (Ordovician of the United States)

Where: Franklin County, Kentucky (38.2° N, 84.9° W)

• Paleocoordinates: 17.4° S, 114.5° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Plectodina tenuis conodont zone, Logana Member (Lexington Limestone Formation), Shermanian (457.3 - 449.6 Ma)

• Section no. 86; "50 ft above top of Tyrone Limestone."

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified, phosphatic, shelly/skeletal, sandy, cherty/siliceous limestone and lithified, phosphatic, shelly/skeletal, sandy, cherty/siliceous packstone

• bioclastic calcarenite and calcirudite, which is sandy and chert bearing in part, and subordinate calcisiltite and irregularly bedded to nodular fossiliferous limestone.

Size class: macrofossils

Preservation: original 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 101429: authorized by Pete Wagner, entered by Hallie Street on 23.12.2010, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
Tergomya
 Cyrtonellida - Cyrtolitidae
"Cyrtolites (Paracyrtolites) subplanus" = Paracyrtolites subplanus, "Cyrtolites (Cyrtolites) retrorsus" = Cyrtolites retrorsus
"Cyrtolites (Paracyrtolites) subplanus" = Paracyrtolites subplanus Ulrich and Scofield 1897
"Cyrtolites (Cyrtolites) retrorsus" = Cyrtolites retrorsus Ulrich and Scofield 1897
Gastropoda
 Bellerophontida - Pterothecidae
Carinaropsis cymbula Hall 1861 snail