THE SKULL OF REPTILES 



59 



The Skull of the Placodontl\ 



(Fig- 49) 

 The skull of the Placodontia is almost unique among reptiles for 

 the extraordinary development of large, flat, crushing teeth upon the 



Fig. 49. Placodont skulls: A-D, Placodus. After Broili. One fourth natural 

 E, Placochelys. After Jaekel. One half natural size. 



