682 NEW YORK STATE MUSEUM 



PLATE 7 



Orbiculoidea ? magfnifica Clarke 



p. 615 



(See pi. 8) 



FIQ. 



1 The half of an infolded pedicle valve showing the pedicle open 

 ing extending for the full radius of the shell. The margin 

 of the infolded portion of the valve is visible at the peri 

 phery of the shield. 

 Portage beds. Tannery gully, Naples N. Y.; at an horizon 

 just above the final apfK\arance of the Naples fauna. 



