360 



EXTINCT AND VANISHING MAMMALS 



mon. Several were seen by our party, and their tracks could 

 be seen at any time. They live mostly in the high flat-topped 

 buttes, where there is good grass." Just when the last ones 

 disappeared from this State and from Nebraska, where they 

 were earlier exterminated, is difficult to say, but they must 

 have held out in the Black Hills region till rather recent dates. 



Badlands bighorn (Ovis canadensi? auduboni] 



