THE SKULL. 



81 



Turbinals are present in the nasal cavity, but are never more than 

 rudimentary in Cetacea. For further details as to the olfactory 

 and auditory capsules and their mode of ossification, as well as the 

 formation of the auditory ossicles, consult the chapters on the 



FlG. 66A. LONGITUDINAL VERTICAL SECTION'S THROUGH THE SKULLS OF 



A, Salamandra maculosa, B, Tcstudo groeca, AND C, Corrus corons, TO SHOW 

 THE RELATIONS BETWEEN THE CRANIAL AND VISCERAL PORTIONS. 



olfactory and auditory organs. Remains of the primitive cartilage 

 are seen in the nasal region in adult Mammalian skulls. 



It has already been stated that, as regards the hard palate, 

 Mammals essentially agree with Crocodiles, but the pterygoids 



c; 



