Adams.] 



The Upper Cretaceous. 



27 



General Section of the Tipper Cretaceous of Kansas. 



Montana \ F t pi (Hay den) \ f . ri ^ are ° s , hal fs (Ci : a f n)> 



(Eldndge), S v J ' ( Lisbon shales (Cragin). 



i Pteranodon beds ( Hesperornis beds (Williston). 



\ (Marsh ) ( Rudistes beds (Williston). 



Colorado ; ' ( Fort Hays beds (Mudge, Williston). 



(Eldridge),i 



Niobrara 

 (Hayden), 



, Benton | Upper group (Logan). . 

 L (Hayden), <( 



^ Lower group (Logan). 



Dakota j Saliferous (Logan). . . . 

 I Hayden), \ 



^Ferruginous (Logan). 



( Victoria shales (Cragin). 

 / Ostrea shales ( Logan). 

 [Fence-post (Cragin). 

 | Inoceramus (Logan). 

 <J Flagstone (Logan). 

 | Lincoln marble (Logan). 

 1 Bituminous (Logan). 

 ( Gypsiferous (Logan). 

 •j Salt marsh (Logan). 

 ( Lignitic (Logan). 



