ammonites
USGS 4073-CO: 0.75 miles east of Milner KY, then 1 miles southwest on Shryock Ferry Rd (Ordovician of the United States)

Where: Woodford County, Kentucky (38.0° N, 84.8° W: paleocoordinates 27.2° S, 63.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Plectodina tenuis conodont zone, Grier Member (Lexington Formation), Shermanian (460.9 - 449.5 Ma)

• distance above base of Curdsville Ls.

• bed-level stratigraphic resolution

Environment/lithology: lithified limestone

• shallow, well-aertaed, mloderately agitated water of normal salinity.
• thin and irregularly bedded to nodular-bedded, poorly sorted limestone and calcisiltite to calcarenite;

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, hydrochloric

• etched

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

Purpose of describing collection: taxonomic analysis

PaleoDB collection 77009: authorized by Pete Wagner, entered by Pete Wagner on 14.12.2007