PLATE XXXIV. 

 Pecopteris clintoni Lx. 



(Page 94.) 



Fig. 1. Pinnae of lax habit, showing irregularity in their large pinnules. U. S. Nat. Mus., 5606. 

 la. Details of pinnules in upper left of the large segment. x2. 

 lb. Detail of pinnule in middle right of same specimen. x2. 



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