156 COMPAEATIVE DENTAL ANATOMY 



surface (Fig. 64). There is always a correspond- 

 ing modification of the condyle and the glenoid 

 cavity to accommodate the movement, and the cor- 

 responding development of the teeth due to lat- 

 eral motion is most remarkably shown. There 

 are deep transverse valleys and high crests, and 

 the duplication is greatest in the direction trans- 



FiG. 64. — Occlusal view of teeth of Antelope (species unknown). 



verse to the jaw movement. The crests have been 

 flattened and bent oblique, or folded about in vari- 

 ous directions, which have produced a variety of 

 patterns of grinding surface where the teeth are 

 much worn. This gives a peculiar arrangement 

 of the dental tissue, and looks as if the enamel, 

 dentin, and cementum had been laid together and 



