Olentangy Shale  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
 ....Upper Devonian
 .....Olentangy Shale
RTOhio
SNPlum Brook Shale has been correlated with Olentangy, and so-called Prout Limestone has been regarded as member of Olentangy Shale. Central Ohio.