Asterobillingsia Bellerophon bioclast bioturbation bivalve bone brachiopod Bryozoan cephalopod Chestnut Run Cladopora colonial Coral Coral Coral Base crinoid crinoid crown Cylindrophyllum Cystoporid Bryozoan Encrinurus Favosites Feeding Trace fenestella Fenestrate Bryozoan fish bone gastropod golf course trail goniatite Grammysoidiea Helminthoposis Ichnofossils Lake Erie Michelinoceras Nautiloid Nereites Orthid Orthoceratoid orthonic cephalopod Outside packstone Phaceloid Pharkidonotus plant Pleurodictyum Prasopora Productic Protoleptostrophia Protovirgularia pygdium rhipidomella Rhynchonellid river rock Rugose Coral Shenango Dam Shenango River Lake Shenango River Trail Shenango Valley Spiriferid strophomemid Syringopora Tabulate Coral Tentaculite thamnopora Trepostome Bryozoan Trilobite Walnut Creek Access Area