MONOGRAPH XVIIl PL. XXXIV 
U. S. GEOLOGICAL SURVEY 
7% 
ENE LAYERS OF 
AND TURRITELLID OF THE EOC! 
THE UPPER BED GREENSAND MARLS. 
CONIDA, CASSIDIDZ, DOLIIDZ, NATICIDZ, ONUSTIDA, SOLARIIDZ, SCALARIIDA, 
