TAB. XIII. 



Portions of the upper and lower jaws of the Iguanodon; nat. size. 



Fig. 



1. The dentary part of the lower jaw of a large, probably full-grown Iguanodon; 



nat. size. 



From the Wealclen of Tilgate, Sussex. In the British Museum. 



2. The outer side of a portion of the back part of the left superior maxillary bone of 



a probably full-grown Iguanodon ; nat. size. 



3. The inner side of the same specimen. 



4. The cut surface of a vertical section taken through the fore part of the same 



specimen. 



From the Wealden near Brook-point, Isle of Wight. In the British Museum. 



