Basilar portion 



Fig. 50. 



H\ 



Intrajugular pro, » 



\> 





/ .itcrj/ 



Squamous p 



■ 



frontal border 



Parietal 



angle 







i 



Squamous border 



Posterior clinoid process 



Intrajugular proa ss 

 Jugular notch 



Sigmoid groove 



If 



w " 



it I 



*.> 



'. 



\ 









51. 







Trat: - 



. 



