268 
MEGALOSAURUS 
Coracoid hone — This bone alone is sufficient to 
prove that the original animal was entirely distinct 
from the crocodiles, and approached very nearly 
to the monitors and iguanas. It differs, however, 
from the corresponding bone of existing species : 
the original is upwards of two feet in length. 
Ribs, and supposed pelcis. — The ribs which Dr. 
Buckland has appropriated to this animal have a 
double articulation like those of the crocodile ; but 
in the ribs of the monitors and other lizards, the 
spinal extremities are never divided into a head 
and tubercle ; it is, therefore, probable, that the 
supposed ribs of the megalosaurus may have be- 
longed to the crocodile, with whose remains they 
are associated ; and that the ribs of the former 
have not yet been observed. 
Extremities A remarkably perfect thigh-bone 
was found at Stonesfield, by Professor Buckland, 
and is two feet nine inches in length ; the medul- 
lary cavity is filled with calcareous spar. We have 
numerous fragments of the femur from Tilgate 
Forest. 
Iguanodon. — The discovery of the teeth and 
other remains of a nondescript herbivorous reptile, 
in the strata of Tilgate Forest, a reptile “ encore 
plus extraordinaire que tons ceux dont nous avons 
connoissance is one of the most gratifying re- 
sults of my labours. The first specimens of the 
teeth were found by Mrs. Mantell, in the coarse 
conglomerate of the Forest, in the spring of 1822 1 ; 
* Cuvier, Oss. Foss., tome v. 2d part, p. 351. 
-t Vide Fossils of the South Downs, p. 5-t. No. -lO, 41. 
