Where: Pike County, Missouri (39.3° N, 91.2° W: paleocoordinates 22.2° S, 58.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Bryant Knob Formation, Llandovery (443.4 - 433.4 Ma)

• 5 ft thick section appx 5 ft above base of exposure.

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, ooidal, gray limestone and dolomite

Preservation: replaced with silica

Primary reference: T. W. Amsden. 1974. Late Ordovician and Early Silurian articulate brachiopods from Oklahoma, southwestern Illinois, and eastern Missouri. Bulletin - Oklahoma Geological Survey 119:1-154 [J. Alroy/M. Sommers/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 3351: authorized by John Alroy, entered by Mike Sommers on 30.07.1999

Creative Commons license: CC BY (attribution)