26o 



HIPPOPOTAMUS-LIKE FORMS 



CHAP. X 



separate American genera towards the European horned genera. 

 A genus sometimes united with Averatherium, but still differing 

 from it in some points, is Aphelops {Teleoceras)} This animal is 

 more nearly approximated to " the modern standard " of Ehino- 



ceroses than is its possible ancestor Aceratherium. The skeleton 

 in general is more robust, even surpassing that of modern forms, 

 and approaching the H'qrpoiwtcMnus. There is a reduction in the 

 upper incisors, which are limited to two pairs, and the lower molars 



1 Osborn, Bull. Amer. Mus. Nat. Hist. x. 1898, p. 51. 



