ROOM III. 



THE IGUANODON. 



227 



the quarry near Cuckfield, are very numerous, and comprise 

 a considerable portion of the skeleton; but no part of the 

 cranium has yet been recognised. 



The specimens in the British Museum, all of which were 

 originally in my collection, and were developed with my 

 own hands, comprise the following : viz. teeth, portions of 

 the upper and lower jaws, tympanic bone ; cervical, dorsal, 

 lumbar, and caudal vertebrae, with their apophyses; the 

 elements of the pectoral arch, namely, clavicle, coracoid, 

 scapulae ; fragment of the sternum, ribs ; sacrum, iliac bones, 

 ischium (?), pubis (?) ; femur, tibia, fibula, metatarsals and 

 phalangeals ; humerus, metacarpals, phalangeals, unguals ; 

 and dermal spines or tubercles. 



I propose to describe these several parts of the skeleton 

 in the order in which they are here enumerated, and after- 

 wards consider the physiological inferences suggested by their 

 examination. 



To facilitate reference to the various objects that will be 

 brought under our notice, the following diagram is appended : 



BONES OF REPTILES FROM THE STRATA OF TILGATE FOREST, 

 IN SUSSEX. 



WALL-CASE C. [3.] 

 Top of the Case, f polyptychodon from Hythe (p. 200.)\ 



Upper 

 Shelf. 



(Tibia and fibula 



Middle- \ belonging to the 



Compart- / same Iguano- ( 



ment. 1 don as the fe- 



I mur, (2.) 



Remark- 

 ably fine 

 Femur. 







The largest and 

 most perfect fe- 

 mur; fromLox- 

 wood. (1.) 



Remains of four Sacral- 

 bones. 

 1. 2. 3. 4. 



(Inferior part of 



p m ,, 

 Fem " r 



! the 



be- 



longing to the 

 ) tibia and fibu- 

 ( la. (2.) 



Narrow \ Numerous teeth of Iguanodons, &c. Portion of the lower jaw of Regno- 

 front 1 *aurus Northamptonl ; and of the upper jaw of Iguanodon. A femur of a 

 i ai i n * i ver y y un g Iguanodon. Horn, or dermal tubercle of the Iguanodon. 

 teage. j Polished sections of a tibia, &c. 



