138 POTTSVILLE FAUNA OF OHIO 



Spirifer boonensis Swallow ? 

 Spirifer cameratus Morton 

 Spirifer opimus Hall 

 Squamularia perplexa (McChesney) 

 Composita subtilita (Hall) 



Parallelodon tenuistriatus (Meek and Worthen) 

 Pteria ohioense (Herrick) 

 Myalina pernafdrmis Cox 

 Myalina swallovi McChesney 

 Posidonia ? acosta (Cox) ? 

 Schizodus curtus Meek and Worthen 

 Schizodus wheeleri Swallow 

 Aviculopecten coxanus Meek and Worthen 

 Aviculopecten herzeri Meek 

 Deltopecten scalaris (Herrick) 

 Acanthopecten carboniferous (Stevens) 

 Euchondria neglecta (Geinitz) 

 Entolium aviculatus (Swallow) 

 Pleurophorus immaturus Herrick 

 Pleurophorus tropidophorus Meek 

 Astartella concentrica (Conrad) 



Patellostium montfortianum (Norwood and Prat ten) 

 Schizostoma catilloides (Conrad) 

 Trachydomia sp. 



Phillipsia trinucleata Herrick 



