Where: Morgan County, Ohio (39.8° N, 81.9° W: paleocoordinates 6.8° S, 18.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Portersville Member, Missourian (305.9 - 303.4 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified shale and lithified limestone

Size class: macrofossils

Primary reference: D. K. Brezinski, M. T. Sturgeon, and R. D. Hoare. 1989. Pennsylvanian trilobites of Ohio. Report of Investigations 142:1-18 [W. Kiessling/U. Merkel] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 71974: authorized by Wolfgang Kiessling, entered by Uta Merkel on 18.05.2007