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



Genus JEquisetum, Lin. 



The stem articulated, the internodes striated, the leaves connected to a 

 sheath, placed round the joints. 



Only one species from the Upper Gondwanas. 



JEquisetum rajmahalense* Oldh. and Morr. sp. (Schimp.) 



1862. Equisetites, Oldham and Morris, Eajmahal Flora (Gondwana Flora, Vol. I,) 

 PI. IT, figs. 2-5, PI. XXXV, figs. 3, 4. 



1877. Feistmantel, Eajmahal Flora, Gondwana Flora, Vol. I, p. 63. 



Resembles JEquisetum munsteri, Schimp. 



Rajmahdl group : Belatikur near Burio, Rajmahal hills. 



Genus Schizoneura,f Schimp. et Moug. 1844. 

 This genus occurs in Europe in Triassic and rhaetic beds only. 



Schizoneura gondwanensis>% Fstm. 



1876. Feistmantel, Eec. G. S. I. Vol. IX, p. 69. 



1880. Pal. indica, Gondwana Flora, Vol. Ill, p. 6], Pis. I A.— IX. A. 

 The stem articulated, striated and branched ; the leaflets about 12-22, 

 long and with a middle vein, aie joined into a sheath which splits into two 

 or more portions, placed round the joint. 



Differs from the European form by the greater^ number and the some- 

 what coarser consistence of the leaflets. 



Range : — 



Upper Gondwanas : Certain red shales of apparently Lower Mahadeva 

 (lower Upper Gondwanas) age, on north face of Latiahar hill, (close to 

 the top) Aurunga coalfield. 



Lower Gondwanas : Panchet group : near Maitur, north-west of 

 Assensole, Raniganj coalfield. 



Raniganj group : Raniganj and Jharia coalfields ; Hurdeeamo, N. W. 

 of Sarum, Bokaro coalfield ; Ramkola coalfield ; Garjan hills, Raigarh 

 coalfield ; South Rewah basin (several places) ; Baricondam, Satpura basin. 



JBardhar group : Lumki hill, Karharbari coalfield. 



Karharbdri beds : ? Karharbari coalfield ; Mohpani coalfield (Satpura 

 basin). 



* Eajmahal hills. 



f Schizo (gr) = to slit ; neura (gr) = the vein. 



% Called so from the Gondwana system. 



