( 



J 684 NEW YORK STATE MUSEUM 



I 



FIG. 



PLATE 8 



Orbiculoidea ? magnifica Clarke 



p. 615 



{See pi. 7) 



1 A large depressed conical shield believed to represent the 

 brachial valve of this organism. Drawn from a plaster 

 cast. 

 Ithaca beds. Truxton X. Y. 



