OF TILGATE FOREST. 
265 
perfect as it is, and partly obscured by the stone, 
bears a striking resemblance to the frontal bone of 
a small crocodile, about two feet in length, from 
the gypsum of Montmartre * : the inner surface 
only is exposed, and exhibits a channel which, if 
our conjecture be correct, formed the passage of 
the olfactory nerve to the nose ; on the upper part 
the orbital arches are seen. 
From the above remarks, it a])pears that the 
strata of Tilgate Forest contain the remains of at 
least two, if not four, species of crocodiles : that 
one of these (that with slender curved teeth) re- 
sembles the gavial of Caen, and probably was about 
twenty-five feet in length ; and the other, with 
obtuse teeth, the fossil crocodile of Jura. 
Megalosaurus Bucklandi. — Of this gigantic 
animal, whose remains have been discovered in 
the slate of Stonesfield, and were first described 
by Dr. Buckland, the teeth, ribs, vertebra', and 
other bones, have been found in the strata of Til- 
gate Forest ; the teeth occur also in the Purbeck 
limestone. Fig. 1. of the wood-cut, p. 26l., repre- 
sents a tooth from Tilgate Forest. No connected 
])ortion of the skeleton has been discovered, with 
the exception of part of the vertebral column, con- 
sisting of five anchylosed vertebrae ; and a mag- 
nificent examjde of a fragment of the lower jaw, 
with several teeth remaining in their sockets. The 
bones which Dr. Buckland appropriates to the Me- 
galosaurus, besides those above mentioned, are a 
])erfect femur ; a coracoid bone ; ribs ; a clavicle ; 
* Cuvier, Oss. Foss., tome iii. pi. Ixxvi. fig. 8. 
