CREATION BY EVOLUTION 



distinctive features and performed certain definite, well- 

 known functions. 



The Horse 



The work of tracing the development of the horse is rela- 

 tively easy, especially the forms of the horse that lived in 

 America, for we have a very extensive series of fossil remains 

 of American horses, taken from beds that are piled in suc- 

 cession one upon another (Fig. 1) . More than 200 different 

 kinds of American horses have been discriminated, and in 

 addition to these about 30 kinds have been found in Europe 

 and nearly as many more in South America, Asia, and Africa. 

 Some beds have yielded thousands of teeth and jaws, some 

 have yielded other parts of the bony frame, and most of the 

 types of horses are represented by complete skeletons. 



Geological Table Showing Evolution of the Horse 



Period 

 Quaternary 



Tertiary 



Epoch years 



J Recent 

 (^Pleistocene 



Pliocene 8 



Miocene 13 



Oligocene 13 



Length of 



epoch in 



millions of Millions of 



years ago 

 1 

 9 



22 

 35 



Kinds of horses 



Equus 



r Plesihippus, Hipparion 

 J Pliohippus, Hippidium 

 I Protohippus 



'' Merychippus 

 Parahippus 

 Hypohippus 

 Anchitherium 



fMiohippus 

 I Mesohippus 



'' Epihippus 



.Eocene 



20 



55 < Orohippus 

 [ Eohippus 



The genus that includes the modern horse (Equus) is 

 represented today by the domestic horse (of which there are 



[226] 



