Mercer Limestone in Newark-Zanesoille Region 307 



Nucula beyrichi von Schauroth 



Nucula parva McChesney 



Leda hellistriata Stevens 



Yoldia stevensotn Meek 



Parallelodon carhonarius Cox 



Parallelodon tenuistriatus Meek and Worthen 



Parallelodon obsoletus Meek 



Parallelodon sangamonensis 



Avicidopinna americana Meek 



Avicula ohioense Herrick 



Myahna swallovi McChesney 



Schizodus cuneaius Meek 



Schizodus curtus Meek and Worthen 



Schizodus wheeleri Swahow 



Avicidopecten coxanus Meek and Worthen 



Avicidopeden occidentalis (Shumard) 



Aviculopecten herzeri Meek 



Aviculopeden cf. fascicidatus Keyes 



Acanthopeden carhoniferus (Stevens) 



Euchondria negleda Geinitz 



Peden (Entolium) aviculatus (Swallow) 



EntoUum attenuatum Herrick 



Lima retifera Shumard 



Placunopsis corbonaria Meek and Worthen 



Allorisma terminale Hall 



Allorisma sp. 



Pleurophorus tropidophorus Meek 



Pleurophorus oblongus Meek 



Pleurophorus subcostatus Meek and Worthen 



Cypricardinia corbonaria ]Meek 



AstarteUa vera Hall 



Astartella newberryi Meek 



AstarteUa varica McChesney 



Dentalium sublaeve Hall 



Bellerophon crassus Meek and Worthen 

 Bellerophon percarinatus Conrad 

 Euphemus carbonarius (Cox) 

 Euphemus nodocarinatus Hall 



