ON irOSSIL FISH-TEETH. 309 



character of the teeth above described appears however so marked that 

 there can be little doubt as to the geological age of the rocks, in which 

 they occur. And taking this evidence in connection with the previously 

 described Brachyops laticeps (Owen)* from Mangali to the North, and 

 with the fish remains of Dapedius and Lepidotus from Kotah to the south, 

 of Maledi ; and also with tlie general character of the plants as described 

 by Mr. Hislop himself from Nagpur, I see no' reason why we should 

 hesitate to say, that there exist in this portion of the Nagpur district, a 

 series of beds, which represent in India the lower mesozoic era of 

 European Geologists. 



There is equally little doubt that these beds will yield a rich harvest 

 of new and valuable contributions to our knowledge of the fauna and 

 flora of that period. 



There is as yet no sufficient evidence to show how far this group 

 extends, or what its thickness and relative importance may be. Nor can 

 this be hoped for, until the whole country is continuously examined, and 

 the true relations of these beds as to superposition, disturbances, &c., 

 established. In truth, from mineral characters, these beds were by 

 Mr. Hislop at first supposed to be tertiary. And it is by no means 

 improbable that mistakes of this kind may have occurred in other places 

 also, and that some of the plants and otlier remains supposed to be of 

 more recent date, may prove to belong to very different groups, from 

 those to which they have been referred. A systematic survey of the 

 district, will alone clear away these doubts. Meanwhile, Mr. Hislop has 

 in this, as in many other Ways, contributed largely to the final result. 



* Quar. Jour. Geol. Soc. London, Vol. xi, p. 37. 

 » ). » 1. „ Vol X, p. 371. 



