104 



THE NEOG^IC REALM. 



[CHAP. 



conformation of their teeth indicates that the ground-sloths were 

 vegetable-feeders, and it is probable that they subsisted largely 

 upon the young twigs and leaves of trees, which may have been 



FIG. 23. UNDER-SURFACE OF SKULL OF Mylodon. (Reduced.) 



brought within reach by the animals rearing themselves up 

 against the trunks and pulling down the boughs with their fore 

 paws. The present treeless condition of the Argentine pampas 

 suggests that the ground-sloths were grazing rather than browsing 



