240 FOSSIL REPTILES. 



According to the impression, the entire muzzle must have 

 been twenty-nine or thirty inches in length. M. Cuvier thinks 

 it probable that there were forty-five teeth on each side in each 

 jaw. This would make the entire number one hundred and 

 eighty. The gavial has only one hundred and twelve. 



In another considerable fragment of the lower jaw, part of 

 the opercular bones was visible ; and on the right side three 

 teeth, the middle one of which was double the size of the two 

 others. The teeth are long, narrow, arched, and very pointed, 

 but not trenchant. 



From a model of the anterior end of the lower jaw, the 

 Baron observed that it was much depressed, widened a little 

 in front, and emarginated at its extremity. On one side twelve 

 teeth were visible, alternately longer and shorter, but all tolera- 

 bly long in proportion to their bulk. In the gavial they are 

 not nearly so close. 



On the annular portions of two cervical vertebrae, it was 

 observed that they did not differ from those of the common 

 crocodile, but in having spinous apophyses broader from front 

 to back, and more inclined behind. Two sacral vertebrae, a 

 portion of the ossa ilii, and the cotyloid cavity, three lumbar 

 vertebrae, and ten dorsal, bearing ribs, were found ; and also 

 some caudal, &c. ; all these presented characters different 

 from the existing species. In the bones of the extremities 

 which remained there was more analogy with those of living 

 crocodiles ; but still there were many slight variations easily 

 perceptible to an experienced eye. 



Abundance of scales and impressions of scales were found, 

 many of them still adhering to the parts of the body to which 

 they belonged, so as to leave no doubt of their appertaining to 

 the same species. They differ from those of the Hving croco- 

 dile more than any other part of the skeleton, and this croco- 

 dile of Caen was beyond all comparison the best provided with 

 defensive armour of any of the genus. The scales are very 

 thick, rectangular, slender towards the edge, and have all their 



