THE LTZART) AND ITS ALLIES 



070 



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sometimes over 10 metres long% and had feet modified 



O 



as paddles. The land lizards were elongated, three-toed, 

 carnivorous reptiles, with hollow leg bones like birds. In 

 the flying lizards, a strong compact body was provided 

 with hollow, air-filled bones, and locomotion was effected 

 by a huge membranous expanse stretched between the 



FIG. 255. Hadrosaurus. From reconstruction model. Osborn, " Kept. 



Amer. Mus. Nat. Hist." 



elongated posterior finger, the trunk, and the hind legs. 

 The spread of the wing was about three feet. 



The Chelonia, 1 or turtles, form an order distinct from 

 the lizards. They are characterized by a depressed form, 

 a bony case, and toothless jaws. Like other reptiles, they 

 are most abundant in tropical countries, since the high 



turtle. 



