ammonites
Active Plum Run Quarry section, (0.0 m height, Peebles Dolomite), Adams Co., Ohi (Silurian of the United States)

Where: Adams County, Ohio (39.0° N, 83.4° W: paleocoordinates 30.0° S, 49.1° W)

• coordinate stated in text

When: Ozarkodina? crassa zone, Peebles Dolomite Formation, Sheinwoodian (428.2 - 426.2 Ma)

Environment/lithology: shallow subtidal; dolomite

• Vuggy, according to strat column. Fossiliferous. Pervasive dolomitization, difficulty in determining original carbonate textures. No (almost) qtz. silt. Probably skeletal packstones. Abundant skeletal material only in lower Peebles beds, corresponds with rapid increase in upper beds of gypsum crystals. Poor preservation of conodonts in Peebles indicates most or all are allocthonous. Very shallow, high energy water, increasing salinity.

Primary reference: M. A. Kleffner. 1990. Wenlockian (Silurian) conodont biostratigraphy, depositional environments, and depositional history along the eastern flank of the Cincinnati Arch in southern Ohio. Journal of Paleontology 64(2):319-328 [J. Alroy/M. Sommers/J. Alroy] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 1159: authorized by John Alroy, entered by Mike Sommers on 16.03.1999

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)