324 GEOLOGICAL RELATIONS OF THE ROCK SYSTEMS 



also a fern {Pecopteris ( Gleichenites) linearis, M. S.) identical with one 

 plentifully associated with the Palseozamise in the "Raj malial" beds. A 

 Stangerites {Taniopteris) was also found, and many stems, which 

 however, were not distinguishable. All these fossil plants found in the 

 beds in the Trichinopoly district, are identical with others from the 

 " Rajmahal" series, and they must, I think, be admitted as proving 

 these beds to be of the same geological epoch as our " Rajmahal" group. 

 And that this age, whatever it were, was undoubtedly pre-cretaceous. 



I have thus, I think, established with tolerable certainty that these 

 se Rajmahal" beds must represent some portion of the older Mesozoic 

 groups of European geologists. I purposely avoid at present arriving at 

 any more definite or closer result. 



We have still to see the relations of the other groups, or systems of 

 rocks which we have established, the Upper Damuda, Damuda and Tal- 

 cheer, with these " Rajmahal" beds. 



And first as to the Upper Damuda of Mr. Medlicott's classification. 



Our collections of fossil plants from this group contain many forms 

 which are not represented in the " Rajmahal" flora. These chiefly consist 

 of conifera ( Taxodit.es, Cupressites, Widdrmgtonites ?) which occur in con- 

 siderable number, of large grass like stems, and of Lycopodiacese. One 

 fValchia seems to be identical with a " Rajmahal" form — of cycadese 

 there are numerous detached leaves, and a large number of what seem 

 to me to be the detached scales or bracts of the cones of cycadeous 

 plants, occurring separately. These are, I believe, the paper-kite fossils 

 of Mr. Hislop, and probably of the same kind as the " winged seed" 

 figured by Phillips* from the lower sandstone and coal of Yorkshire. 

 There are similar remains in the " Rajmahal" beds. 



One Pal&ozamia also is identical in both groups. These identical 

 fossils although few, seem sufficient to place the Upper Damuda beds, 

 of Mr. Medlicott's report, on about the same geological horizon as the 



* Geology of Yorkshire, Vol. I, PI. 10, Fig, 5. 



