Parietal hunt,/ 



Groove for middle temporal artery 



temporal tine 



Parietal notch 

 Suprameatal spine 





Mastoid foramen ^^ 



Occipital border 

 (mastoid portion) 



Mastoid groove 

 Mastoid portion 



. ■ ■ 



Squamous portion 



■ 



Sphenoidal I 



> 



■latic 



■ ticular eminence 

 Glenoid fossa 

 Petrotympanic fissure 





Salens arterio 

 Sphenoidal border 



Petrous portion 



(apex) 



Subarcuate fossa 

 Internal flfl meatus 



inferior petrosal groove 



t process 



■ 



Orifice ofaq 



Fiz. 5o. 



