352 



HISTORICAL PALEONTOLOGY. 



the Glyptodon davipes, from the tip of the snout to the end of 

 the tail, was more than nine feet. 



There are no canine or incisor teeth in the Glyptodon, but 



Fig. 261. Skeleton of Mylodon robustus. Post-Pliocene, South America. 



there are eight molars on each side of each jaw, and the crowns 

 of these are fluted and almost trilobed. The head is covered 



Fig. 262. Skeleton of Glyptodon clavifies. Post- Pliocene, South America. 



by a helmet of bony plates, and the trunk was defended by an 

 armour of almost hexagonal bony pieces united by sutures, and 



