STRATIGRAPHICAL ELEMENTS : CRETACEOUS. 37 



myself collected, fragments of which fill the rock, is most nearly 

 allied to — 



Acanthoceras mantelli, Stol. 



The next most common form appears identical with — 



Acanthoceras navicularis. 

 There are also many other allied species, all more or less related 

 to— 



A. rotomagensis. 



A number of imperfect specimens belonging to the Cristati group 

 are chiefly — 



Schlcenbachia inflatus. 



And a form apparently allied to — 



A, blan/ordianus, Stol. 



All these forms are restricted to the Utatur group of the Cre- 

 taceous of Southern India, the equivalent of the Chalk-marl and U. 

 Greensand — Cenomanian of continental geologists. 



Besides the above very characteristic species a few other in- 

 determinable ammonites and nautili were obtained. 



The curved and hooked forms of cephalopoda were found in fair 

 abundance, but generally too broken for identification ; but many 

 species appear of — 



Anisoceras. 

 Ancyloceras . 

 Baculites. 

 Hamites ? 



One brachiopod, a terebratula y was found; and of bivalves a 

 solitary large new species of pholodomya. 



Of the few echinodermata collected we recognised — 



Echinoconus sp. 

 Micir aster sp. 



On the whole, therefore, I am inclined to refer the position of 

 this limestone-bed to a horizon about that of the Utatur group or 

 Cenomanian, rather than to the Gault ; my reasons being the striking 

 similarity of facies between these Hazara Ammonitidae and those of 

 Southern India belonging to the Utatur group. As the Gault follows 

 next to the Cenomanian in descending order, the change of horizon in- 

 troduced is but slight. 



( 37 ) 



