ammonites
USGS 6916-CO. Boyle County Quarry northeast of Perryville (Ordovician of the United States)

Where: Boyle County, Kentucky (37.7° N, 84.9° W: paleocoordinates 27.4° S, 63.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Belodina confluens conodont zone, Perryville Limestone Member (Lexington Limestone Formation), Shermanian (460.9 - 449.5 Ma)

• Section no. 30A; "Basal 2 ft of Salvisa Bed; eastern wall of quarry."

• bed-level stratigraphic resolution

Environment/lithology: lithified, burrowed, brown, gray limestone

• "10 to 15 ft of interbedded light-gray to light-olive-gray micritic limestone and brownish-gray micritic limestone.... The matrix is largely pelletal and is and is burrowed in many places."

Size classes: macrofossils, mesofossils

Preservation: replaced with silica

Reposited in the USNM

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: general faunal/floral analysis

PaleoDB collection 100289: authorized by Pete Wagner, entered by Hallie Street on 07.12.2010