ORDINAL TYl'KS OF MOLARS: AMBLYPODA 



167 



paracone 



parasty/e'-t 



protocone 



protoconid 



B 



metacone 



hypocone 



hypoconid 



^^^^^^^^^^ metaconid ^- -^ entoconid 



FIG. 143. Scheme of upper and lower molars in Coryphodon. (Compare Fig. 141.) 



'en* 

 Uintatlierium. 



protoconid hypoconid 



paraconid- 



-entoconid 



metaconid , Entoconid* 



metasty/id 



me' 



Pantolambda. 

 FIG. 144. Evolution of the lower molars in the Amblypoda. Crown view. 



