248 



LYELL'S ELEMENTS OF GEOLOGY. 



Fossil Plants of the Coal Strata. 



Fig. 249. 



Fiff. 250. 



Pecopteris lonchittca. 

 (Foss. Flo. 153.) 



a. Sphenopteris crenata. 



b. The same, magnified. 



(Foss. Flo. 101.) 



Fig. 251. 



Fig. 252. 



Sigillaria lAndleyi, Brong. 

 (Cavlopteris primaxa, Lindley.) 



Sigillaria lavigata, Brong. 



