LIFE OF TERTIAEY PERIOD 



249 



5 « 



Co 03 



a. e 



^ CD 



^ w 



TO - 



<— I M 



<o 



<4-i ,d 



o ** 



o 



4) 



(4 



CS 



a> 



a 





I a 



00 o 

 u 



o 



rT a 



1—1 o 

 EC4 



Tertiary Mammals of South America and Australia 



ISTo part of the world has so many distinct groups of !Mam- 

 malia peculiar to it as South America, among wliioh the most 

 remarkable are the sloths and the armadillos; and all of tlicm 

 are found fossil in the middle or late Tertiary or the Pleisto- 

 cene, from Brazil to Patagonia, and are often represented by 

 strange forms of gigantic size. Some account of these will now 

 be given. DarAvin was one of the first collectors of these 

 fossils on his voyage in the Beagle, and during the la:^t twenty 



