GEOLOGY AND PALEONTOLOGY OF THE SCHOHARIE VALLEY 219 



Fig-. 173 P t e r i n e a f 1 a I) e 1 1 u m 





Fig. 174 Pleurotomaria 

 capillaria. x2 



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Fig. 1T6 Boiler op h on patulus 



Fig. 175 Pleurotomaria subcomarginata. x2 



