Dinosaurta. 
PLATE 59. 
Genus IGUANODON. 
Fic. 
1. Inner side-view of the dentary element of the right mandibular ramus, /yuanodon 
Mantelli; nat. size. 
2. Anterior surface of a worn upper molar of a younger Zguanodon. Mantelli. 
3. Inner surface of the same tooth. 
4. Outer surface of do. 
5. Posterior surface of a lower molar of the same Zgwanodon Mantelli. 
6. Inner surface of the same tooth. 
7. Outer surface of do. 
S. Inner side-view of a portion of the right mandibular ramus of a younger Jguanodon 
Mantelli ; nat. size. 
9. Major part of the skull of Jguanodon Pozii ; 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 Olay of Sussex, are in the Collection of S. H. 
Beckles, Esq., F.R.S., F.G.S., &e. 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 o£ 
Wight, are in the Collection of the Rev. W. Fox, M.A., of Brixton, in that island. 
