178 0. Feistmantel — A sketch of the history of the [No. 3, 



It is represented by some other groups in other coalfields, viz., the 

 Kamthi group* of the Nagpur area and of the Raigarh-Hingir coalfields,f 

 and the Bijori horizon of the Satpura basin, J ; both are fossil if erous. 



The Mangli shales of the Cent. Provinces, (South of Nagpur) are 

 also placed here although I was (and I must say, I am still so) very much 

 inclined to believe them to be more closely related to the Panchet group. 



Ironstone shales. — 1861, W. T. Blanford. On the Geology etc., of the Raniganj 

 coalfield, Mem. G. S. I. Vol. Ill, p. 28. 



This group, from a stratigraphical point of view belongs to the 

 Eaniganj group, though on account of the occurrence of ironstone it is 

 easily separable. It is present in most of the Bengal coal-fields and both 

 the ironstones as well as the carbonaceous shales in which they are 

 imbedded, or with which they alternate, are fossiliferous, the fossils being 

 very much the same as in the other groups of the Damuda division. 



The Motiir horizon § of the Satpura basin is most probably the repre- 

 sentative of the ironstone shales. 



Bardhar group. — 1861 Oldham (T.) Additional remarks on the geology, relations 

 etc., of the rocks in Bengal etc., M. G. S. I. Vol. Ill, p. 42. 



For the lowest group of the Damuda division (series), which was at 

 first simply called " lower Damudas," the above name was proposed by 

 Dr. Oldham (L861), since the corresponding term " upper Damudas," had 

 also to be replaced by another name (the present Jabalpur group) as it 

 was employed for a group of the upper Gondwana portion. 



The Barakar group, like the Eaniganj group, is rich in coal, and is 

 present in most of the coalfields ; it contains also numerous fossils, which, 

 however, on the whole do not differ much from those of the two higher 

 groups. 



c. Talchir Division. 

 Karharbari beds (coalbearing.)— 1877, Feistmantel, Rec. G. S. I. Vol. X, Pt. 3, p. 

 137-139. 



1878, W. T. Blanford, Eec. G S. I, Vol. XI, Pt. 1. 



The coalbeds of the Karharbari coalfield were formerly included in 

 the Barakar group ; but the examination of the Flora has shewn their 

 closer connexion with the Talchirs. They are with certainty known from 

 the above coalfield and from the Mopani coalfield, Satpura basin. 



* 1870, W. T. Blanford, Eec. G. S. I. Vol. IV, p 50 ; Mem. G. S. Ind. Vol. IX, 

 p. 11, et seq. 



f V Ball, Bee. G. S. India, Vol. VIII, p. 113, etc. 



+ H. B. Medlicott, Mem. G. S. I. Vol. X, p. 27. 



§ H. B. Medlicott, Mem. G. S. I. Vol. X, p. 29, (161.) 



