PLATE I. 



Tguanodon Mantelli (nat. size). 



Figs. 



1. Left radius and ulna, thenal or palmar aspect, 



2. Left ulna, proximal end, showing articular surface for the radius. 



3. Left radius, proximal end, showing articular surface for the ulna. 



4. Section of shaft of ulna. 



5. Section of shaft of radius. 



From the Wealden Clay, Sussex. In the Collection of S. H. Beckles, Esq., F.R.S., 

 F.G.S, &c. 



