Where: Ohio (39.0° N, 84.0° W: paleocoordinates 26.1° S, 58.0° W)

• basin-level geographic resolution

When: Amorphognathus superbus conodont zone, Arnheim Formation, Richmondian (449.6 - 445.5 Ma)

• Richmondian; Includes collections from both Sunset and Oregonia Members of Arnheim Formation. Sunset includes two distinct facies, one was deposited in a deep subtidal ramp environment and the other was deposited in a shallow subtidal environment. Oregonia was deposited in a shallow subtidal environment.

• formation-level stratigraphic resolution

Environment/lithology: bioturbated, phosphatic, argillaceous packstone and mudstone

Size classes: macrofossils, mesofossils

Preservation: original calcite, replaced with phosphate

Primary reference: E. Dalve. 1948. The fossil fauna of the Ordovician in the Cincinnati Region. University Museum, Department of Geology and Geography, University of Cincinnati 1-56 [S. Holland/S. Holland/J. Ju]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5326: authorized by Steven Holland, entered by Steven Holland on 23.09.1999

Creative Commons license: CC BY (attribution)