72 POTTSVILLE FAUNA OP OHIO 



Schizodus cuneatus Meek 

 Schizodus curtus Meek and Worthen 

 Schizodus wheeleri Swallow 

 Aviculopecten coxanus Meek and Worthen 

 Aviculopecten herzeri Meek 

 Aviculopecten sorer Herrick 

 Deltopecten occidentals (Shumard) 

 Deltopecten scalaris (Herrick) 

 Acanthopecten carboniferous (Stevens) 

 Crenipecten foerstii Herrick 

 Euchondria neglecta (Geinitz) 

 Entolium attenuatum Herrick 

 Entolium aviculatus (Swallow) 

 Lima retifera Shumard 

 Allerisma terminate Hall 

 Pleurophorella geinitzi (Meek) 

 Pleurophorus immaturus Herrick 

 Pleurophorus spinulosa n. sp. 

 Pleurophorus tropidophorus, Meek 

 Astartella concentrica (Conrad) 

 Astartella compacta Girty 

 Astartella newberryi Meek 

 Astartella varica McChesney 

 Cypricardinia ? carbonaria Meek 



Plagioglypta prosseri n. sp. 



Bellerophon crassus Meek and Worthen 



Pharkidonotus percarinatus (Conrad) 



Bucanopsis meekiana (Swallow) * 



Patellostium montfortianum (Norwood and Pratten) 



Euphemus nodocarinatus (Hall) 



Naticopsis altonensis (McChesney) 



Schizostoma catilloides (Conrad) 



Hemizyga sp. undescribed 



Sphaerodoma klipparti (Meek) 



Sphaerodoma regularis (Cox) ? 



Pseudorthoceras knoxense (McChesney) 



Phillipsia sangamonensis Meek and Worthen 

 Phillipsia trinucleata Herrick 



The Lower Mercer limestone is exposed along Flint Ridge which 

 is located for the most part in Hopewell Township, Licking County, 

 although it also extends eastward into Muskingum County. Fossils, 

 which occur in great abundance wherever the member is present, were 

 collected at several localities. A large number of species were found at 

 the old cannel coal mine, about one-half mile north of the Flint Ridge 

 road and just west of the north and south road passing parallel to the 

 township line (Locality 47). The geologic section measured at the 

 cannel coal mine follows: 



