TEETH 



91 



they are partially swallowed, thereby losing none of 

 the liquid contents (Fig. -17). 



Many of the fossil monsters were terribly armed 

 with teeth that grew in sockets or grooves directly ont 

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



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



rows or pavements, which were used evidently to 

 grind vegetable 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, hke those of dogs and tigers (Figs. 48, 

 49, and 50). 



