PART 3.] 
Blanford: Gonrlivdna Series in India. 
79 
b. —The Panchet group has Schizoneura Gondwanensis, Fstm., common with the 
Damudas, and whilst the other two species of the Panchets, Pecopteris concinna, 
Presl, and Gyclopteris paahyrhar.his, Gopp., Would indicate a Rhaetic age, Schizoneura 
Gondwanensis, Fstm., tends to give them an older aspect, so that I class them as Keuper. 
c. —The Damudas have yielded important fossil plants of lower triassic age 
(Buntsandstein). I therefore refer all the three sub-divisions to this age, as the same 
fossil plants, and especially the same species of Glossopteris, Brgt., are found in all three. 
d. —The Talchirs contain a fossil plant, which has been found also in the Baradcars, 
viz., Gangamopteris cyclopteroides, Fstm., so that I do not hesitate to consider the Talchirs 
as the lower continuation of the Danmdas. 
We have derived, therefore, from the plants the following scheme:— 
I.—Jurassic. 
Middle. Lower. 
Kach. Rajmabal. 
Jabalpur. Golapili (near Ellore). 
Sripermatur (Madras). 
II.— Teiassic. 
Lower (Buntsandstein). 
Danmdas— 
Upper (Kamthi, Raniganj). 
Middle (Iron shales). 
Lower (Barakar). 
Talchirs. 
TJpper (Keuper). 
Panchet group. 
Note on the geological age of certain groups comprised in the Gondwana series 
of India, and on the evidence they afford of distinct Zoological and Bota¬ 
nical Terrestrial Regions in ancient epochs. By W. T. Blanford, a. r. s.m., 
f. r. s., &c., Geological Survey of India. 
In the preceding paper and in that published in the last number of the Records {ante 
pp. 28—42), Dr. Feistmantel has stated at length the conclusions as to the age of the 
different members of the great plant-bearing or Gondwana Series of India, to which a care¬ 
ful and exhaustive study of the fossil flora has guided him. How urgently a careful study 
of the plants was needed it is unnecessary to point out, and the results to Indian 
Geolosy must he most important. Guided by the abundance of particular forms, Indian 
Geologists had hitherto not unreasonably supposed that the Kachh (Cutch) plant-hearing 
beds were of the same age as those of Rajmehal, Tricbinopoly, &c., for in all these localities 
the commonest species are two forms of Ptilophyttum (Palceozamia). In the same 
manner no doubt had ever arisen as to the identity of the Damuda flora with that of the 
Australian coal rocks, for the common types in both are species of Glossopteris and 
Yertebraria, which have hitherto always been supposed to be identical, whilst other forms of 
Bquisetacece and ferns from both countries are closely allied. Whether we finally accept 
Dr. Feistmantel’s conclusions, or not, it is impossible to conceive any researches likely to 
afford a greater service to Indian Geology than the accurate determination of the homotaxis 
of our different fossil floras. 
