Odont. 



482 



Odontopteris gracillima Continued, 



2a. 



■•/^y:.-///, 



/ V My/ ./ / ^ •///' ^ /■' ,./.^;v / 



middle ; 2 <z, magnified nervation ; 3, a single pinna, nearly 

 entire, from middle of a frond ; 3 a, enlarged^ to show nerva- 

 tion. Koof shales of Coal No. i, Youngstown, O. — XII. 



Odontopteris neuropteroides, Newberry. Pal. Ohio, 

 Vol. 1, 1873, page 381, plate 47, fig. 1, part of frond with basal 

 pinnules like Neuropteris ; figs. 2, 3, pinnae having character 



