THE GREAT DINOSAURS 



ing well up on the legs. We do not know much 

 about their skin ; it was probably smooth and 

 with only small horny scales on it, as in many 

 living lizards, and often had great horns and 

 crests growing out of it. But we know the 



Fig. 141. — Drawing of the skeleton of Ignanodon hernisear- 

 tensis. From the ground to the top of the head as the 

 animal is posed, is about foui-teen feet. 



complete skeletons put together from bones 

 chiselled out of the hard rock in which they are 

 found, and we know that in important matters 

 of shape and build the skeleton was different 

 from that of living reptiles. The great size to 

 which some of the Dinosauria attained is 



197 



