FOSSIL MAMMAL GALLERY. 



73 



western portion of the United States of America. This animal 

 combines in some respects the characters of a Ehinoceros with 

 those of an Elephant, and has others altogether special to itseK. 

 The group to which it belonged became extinct in the Miocene 

 period, without leaving any successors. 



Near the pavilion is a skeleton (fig. 45) of a recently Sea-Cows. 

 extinct and interesting animal, the Northern Sea-Cow {Bhytina 

 gigas or stelleri), the last resort of which was Bering Island 

 in the North Pacific, where it was completely exter- 

 minated towards the close of the eighteenth century. 



