﻿PLATE I. 



Genus Iguanodon. 



Fig. 



1. Inner side-view of the dentary element of the right mandibular ramus, Iguanodon 



Mantelli ; nat. size. 



2. Anterior surface of a worn upper molar of a younger Iguanodon Mantelli. 



3. Inner surface of the same tooth. 



4. Outer surface of do. 



5. Posterior surface of a lower molar of the same Iguanodon Mantelli. 



6. Inner surface of the same tooth. 



7. Outer surface of do. 



8. Inner side-view of a portion of the right mandibular ramus of a younger Iguanodon 



Mantelli; nat. size. 



9. Major part of the skull of Iguanodon Foxii ; nat. size. 



9 a. Portion of left tympanic and mandibular ramus of the same skull ; nat. size 

 (drawn without reversing). 

 10. Outer side-view of a worn, right, upper molar of the same skull ; magn. 5 diams. 



Figs. 1 — 7, from the Wealden Clay of Sussex, are in the Collection of S. H. 

 Beckles, Esq., F.R.S., F.G.S., &c. Fig. 8, from the Middle Purbeck of Swanage, is in 

 the Collection of A. J. Hogg, Esq. Figs. 9, 9 a, 10, from the Wealden of the Isle of 

 Wight, are in the Collection of the Rev. W. Fox, M.A., of Brixton, in that island. 



