206 



ILLINOIS NATURAL HISTORY SURVEY MANUAL 4 



it was warm. Most notable of these animals were the elephant- 

 like mammoths and mastodon, the musk-ox, the giant beaver, and 

 the giant ground sloth. Their fossilized bones and teeth have 



Fig. 113. — A restoration of the American mastodon. 



:t*i if. I-.IK! 



Fig. 114. — A restoration of the mammoth. 



