TEETH 



91 



they are partially swallowed, thereby losing none of 

 the liquid contents (Fig. 47). 



Many of the fossil monsters were terribly armed 

 with teeth that grew in sockets or grooves directly out 

 of the jaw-bones. Some also had teeth set in several 



Fig. 47. — Dasypeltis-unicolor, in act of swallowing a fowl's egg. 



rows or pavements, which were used evidently to 

 grind vegetal)le food, and some had beaklike, duck- 

 shaped jaws, like those of the spoonbill. Others had 

 rather turtlelike, or birdlike, beaks with a pair of 

 great tusks projecting, and others had mouths armed 

 with short sharp teeth, and in their midst were ter- 

 rible fangs, like those of dogs and tigers (Figs. 48, 

 49, and 50). 



