OTHER EXTINCT ODD-TOED UNGULATES 1105 



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North America also yields remains of smaller but allied Ungulates, such as Palcz- 

 vsyops, which extend downward to the highest beds of the Eocene, and have no 

 bony processes on the skull. 



The most extraordinary modification of the Odd-Toed Ungulate type is, how- 

 ever, presented by the chalicothere, which is common to the Pliocene and Miocene 

 deposits of Southern Asia, Europe, and the United States. In these animals the 

 molar teeth were of the type of the titanothere; but the limbs terminated in long, 

 curved claws, very similar to those of the pangolins or scaly ant-eaters, described in 

 the next volume. Indeed, so like are the limbs of the chalicothere to those of the 

 last-named animals, that they were originally regarded as indicating a member of 

 the same group. Apparently, however, the chalicotheres must be regarded as 

 specially-modified Ungulates, more or less closely allied to the Odd-Toed group, and 

 adapted for a fossorial, or possibly arboreal mode of life. 



70 



