U. S. GEOLOGICAL SURVE' 



..:OhOGRAPH yVNI PLAT E ; 



s A 



^ ■ 'Mi 



-i- m 







A^'\ 



Wk 



C>^. 



L^^ 

 / 



>< 





"i\ 



U 



\ 



tv 



-ik 



4 



/ 



STROMBID/E OF THE LOWER GREENSAND MARLS. 



