FOSSIL REPTILES. 229 



crocodile, whose head, one foot long, with all its teeth, is said 

 to be in the Ducal collection in Brunswick. 



The bones found in the Vicentine territory were not situated 

 in depositions precisely resembling the foregoing ; but they 

 belonged, however, to the limestone of Jura. 



Considerable portions of jaws have been discovered in a 

 mountain near Rozzo, on the confines of the Vicentine and 

 the Tyrol^ in calcareous stone, of a reddish yellow colour. 

 This stone is the ammonitiferous limestone of Jura, covered 

 by the other kind which is destitute of shells. 



There was found there the anterior portion of a muzzle, and 

 two halves of the lower jaw detached from each other, but 

 remaining nearly in their natural position. The lower jaw is 

 twenty-five inches and a half in length, and eight inches broad. 

 Many of the teeth had fallen, but became engaged in the stone, 

 where they still surround the maxillary bones. The alveoli 

 are visible in their proper places, and even a part of the roots. 

 M. Sternberg, who gives this description, assures us that no 

 little tooth was found in the cavities of the large ones. These 

 bones appear to have belonged to a crocodile, but by no 

 means to the common gavial, as M. de St. Fond confidently 

 asserts. The posterior portion of the jaw would not be in a 

 right line with the anterior, that is, with the part which be- 

 longs to the symphysis, but would make an angle with it, and 

 thus remove more from its correspondent part on the other 

 side, if this specimen was a relic of the common gavial. 



This is a sufficient character for distinguishing this head, 

 and especially the lower jaw, from that of gavial, and to ap- 

 proximate it to the head found at Altorf, and one of those of 

 Honfleur. The Baron would assign them all to one and the 

 same species, if he could depend on the drawings. 



There are few countries more remarkable for petrifactions, 

 than that which extends along the banks of the Altmuhl, one 

 of the streams of the Danube, towards Pappenheim and Aich- 

 sted, where numerous quarries of a whitish calcareous slate, in 



