PERMIAN. I17 



but several of the genera of ferns do not occur 

 tain. 

 Among the SS - in the marine beds between 



Hartle] land Nottingham the foraminifera in- 



clud - N ther the corals 



variation from 



ral sense this is 

 true of • number of the 



genera whi< - the primary period are 



tie characterise 1 oi 



lepiSy but the most abundant fish 



tiles of tlie Permian. 



Labyrinthodont reptilia, distinguished by 



• :i blended with the jaw bones without 



iund in some British coal- 

 known fr< »m Permian deposits. 

 1 and in Saxony many small animals 



div< .r; some long and Miakelike, 



S :ne of tl 



ss - of the Kilkenny coal-field, 

 from the coal-fields of 

 Illinois, Ohio, and N S otia, and are referred 

 to the same Bohemian ani- 



mals, named Branchiosaurus^ still ; es in the 



fossil state eton to the bony arches which 



supported gills. This old reptile, like some of 

 the ancient ited with it, may have 



athed by gills as well as lungs, like certain of 

 the living amphibia. This terrestrial life makes 

 a close link between the Permian and Carbonifer- 

 ous per: 



The Permian rocks contain another extinct 

 group of animals named Anomodontia, which 



