76 MIGHTY ANIMALS 



was really a distant relative of the Plesiosaur. So 

 powerful was this creature that wherever he went 

 he left destruction in his path. 



When a number of Mosasaurs or Elasmosaurs 

 got together to fight or to frolic there must have 

 been a tremendous splashing. But they fought 

 far more than they frolicked, for in those days life 

 was one constant warfare in which the big animals 

 battled to keep their positions as rulers, and the 

 smaller ones to save themselves from utter destruc- 

 tion. 



Then, after a time, all these sea monsters com- 

 pletely disappeared. Even the waters in which 

 they lived have vanished and in place of them are 

 cities and towns, villages and farmlands. And so, 

 to-day, people by the thousands are living where 

 once these despots made their homes. 



