Where: Pike County, Missouri (39.3° N, 91.0° W: paleocoordinates 22.3° S, 58.5° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Bryant Knob Formation, Llandovery (443.4 - 433.4 Ma)
• "Fossil collections from a silicified coquina ~5 ft above exposed base of the Bryant Knob Fm., and from silicified fossils in the upper 4 ft of the Bryant Knob."
• group of beds-level stratigraphic resolution
Environment/lithology: deep subtidal shelf; lithified, ooidal, cherty/siliceous limestone
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 3348: authorized by John Alroy, entered by Mike Sommers on 30.07.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Strophomenata | |
Leptaena sp. Dalman 1828 | |
Rhynchonellata | |
Dalmanella edgewoodensis Savage 1913 | |
Eospirigerina putilla Hall and Clarke 1894 | |
Cryptothyrella ovoides Savage 1913 |