AGE OF MAMMALS. 



301 



Mylodon did, by pulling down trees, as represented in 

 the case of one species in the front part of Fig. 177. 



Fig. 177. 



Another genus of the Sloth-like family of the Post-terti-. 

 ary period was the Megalonyx, the name (megas, great, 

 and onux, nail) being given to it on account of its large 

 claws. The first species known was found in Virginia, 

 and this name was suggested by President Jefferson. 

 Its size was about that of an ox, but it was much more 

 solidly and heavily built. 



411. Glyptodon. This genus, embracing several spe- 



