THE FORERUNNERS OF THE HORSE 267 



groups have been included in the same family 

 P alee ot her iidce. Since, however, the palaeotheres 

 seem to form a non-progressive line of their own 

 while the anchitheres are evidently ancestral to 

 the horses, it seems preferable to keep them apart ; 

 in fact, to take a middle course between those 

 who class Anchitherium in the Palceotheriidce and 

 those who include it in the Equidce. The range 

 of the genus extends from France to Bavaria and 

 Austria. 



In the John Day beds which connect the 



Left Upper Molar Tooth of Anchitherium 



pa, paracone ; me, metacone ; //, protoconule ; //, paraconule ; /, anterior 

 pillar, or protocone ; hy, posterior pillar, or hypocone 



Miocene with the Oligocene of North America, 

 Anchitherium is represented by the nearly re- 

 lated Miohippus. This genus comes very close 

 to the undermentioned Mesohippus of the White 

 River Oligocene, but is represented by species of 

 larger size (and therefore nearer Anchitherium), 

 the typical one standing about 6 hands (24 inches) 

 at the shoulder. The main differences, other than 

 size, between the two genera are to be found in the 



