Where: Carters County, Oklahoma (34.5° N, 96.8° W: paleocoordinates 22.4° S, 71.4° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Amplexograptus manitoulinensis graptolite zone, Welling Formation (Viola Group), Maysvillian (450.2 - 449.6 Ma)
• Given as Unit 2 of the Viola, which is now Welling
• bed-level stratigraphic resolution
Environment/lithology: deep subtidal; burrowed, nodular, calcareous, cherty/siliceous mudstone
Size classes: macrofossils, mesofossils
Preservation: cast
Primary reference: L. P. Alberstadt. 1973. Articulate brachiopods of the Viola Formation (Ordovician) in the Arbuckle Mountains, Oklahoma. Oklahoma Geological Survey Bulletin 117:1-90 [M. Patzkowsky/Z. Krug/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 184442: authorized by Pete Wagner, entered by Pete Wagner on 27.02.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Pterobranchia | |
Orthograptus eucharis Hall 1865 graptolite |