CLASS MAMMALIA 



687 



about as large as the largest existing elephants, and possessed 

 three pairs of conspicuous protuberances upon the dorsal surface 

 of its head; the enormous tortoise armadillo, Glyptodon clavipes 



Fig. 549. — Glyptodon clavipes, a fossil edentate resembling the armadillo. 

 (From Weysse, after Owen.) 



(Fig. 549), which was almost nine feet in length, and was pro- 

 vided with an arched shell of immovable bony plates; and the 

 mastodon (Fig. 550), of Europe. Asia, and South Africa, as well 



Fig. 550. — Restoration of Mastodon arvernensis. (From H. F. Osborn.) 



as of North America, which resembled our modern elephants in 

 size and shape, and of which more than thirty species have been 

 distinguished. 



