ANIMALS OF THE PAST 



349 



It is among the land reptiles that we find the hugest 

 animals. Some of them were even larger than the elephant 

 and moved sluggishly. Many of them were herbivorous, 

 cropping the branches of trees, while others were carnivo- 



FiG. 230. — Land reptile of mesozoie times. 



rous, killing their fellows. Some of them had huge hind 

 limbs on which they walked, dragging an immense tail 

 behind, and holding the small front legs up like a kangaroo 

 (Fig. 229) . The one shown in Figure 230 walked on all four 



Fig. 231. — Flying reptile of mesozoie times. 



legs and ^^as sometimes sixty feet long. A species of land 

 reptile found in Colorado attained a length of seventy to 

 eighty feet. 

 More curious still were the flying reptiles. These were a 



