Edgewood Group, Locality D (Silurian of the United States)

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

• "Unrestricted offshore environment of moderate depth involving some water movement by waves and (or) currents." "Interbedded dolomite, dolomitic limestone, and organo-detrital sparite with some oolites."

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]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)

Taxonomic list

• Brachiopods (Articulate) only.
 Orthotetida - Schuchertellidae
"Coolinia propinquua" = Schuchertella propinqua
"Coolinia propinquua" = Schuchertella propinqua Meek and Worthen 1868
 Athyridida - Rhynchospirinidae
Homoeospira fiscellostriata Savage 1913
originally entered as "Homoespira fiscellostriata"
 Athyridida - Meristellidae
 Pentamerida - Virgianidae
 Atrypida - Atrypinidae
Eospirigerina putilla Hall and Clarke 1894
 Rhynchonellida - Rhynchotrematidae
 Orthida - Rhipidomellidae
? Mendacella sp. Cooper 1930
originally entered as "? Mendacella sp."
 Orthida - Platyorthidae
? Diceromyonia sera
originally entered as "? Diceromyonia sera"
 Orthida - Dalmanellidae
 Orthida - Hesperorthidae
Dolerorthis savagei Amsden 1974