Where: Oklahoma (36.1° N, 98.2° W: paleocoordinates 20.3° S, 77.2° W)

When: Oil Creek Formation (Simpson Group), Whiterockian (470.0 - 457.3 Ma)

• overlies a dolomitic layer and a microbreccia (containing dolomite and granite). PJW: Kanoshian

• formation-level stratigraphic resolution

Environment/lithology: marine; shale

Size class: mesofossils

Preservation: mold/impression, replaced with pyrite

Primary reference: J. T. Hannibal and R. M. Feldmann. 1997. Phyllocarid Crustaceans from a Middle Ordovician Black Shale Within the Ames Structure, Northwest Oklahoma. Oklahoma Geological Survey Circular 100 100:370-373 [C. Schweitzer/C. Schweitzer]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 151846: authorized by Carrie Schweitzer, entered by Carrie Schweitzer on 12.10.2013

Creative Commons license: CC BY (attribution)