Carboniferous Invertebrates-. 

 CLASSIFICATION OF FOSSILS -Concluded. 



Mollusca — continued. 



PELECYPOD A— continued. 



ASIPKOmDA—conti?iued. 



HOMOMYARIA. 



Arcidae. 



Macrodon. 



Nuculana. 

 Nuculidae. 



Nucula. 



Yoldia. 

 Trigoniidae. 



Schizodus. 

 SIPHONIDA. 



Integripalliata. 

 Solemyidae. 



Solenomya. 

 Astartidae. 



Pleurophorus. 



Astartella. 

 Cardiidae. 



Conocardium. 



Cypricardlnia. 



SlNUPALLIATA.* 



Cardiomorpha. 



Edmondia. 



Allorisrna. 



Sedgtvlckla. 



Chcenomya. 



Of uncertain position in this order. 



