Bones of the Skull. 



51 



Pars orbitalis 

 ossis frontalis"" - -- 



^Foramen caecum 

 x Crista galli 



Lamina cribrosa ossis 

 ethmoidalis 



Sutura sphenofrontalis 

 ^V, Foramen opticum 



Ala parva ossis 

 sphenoidalis 



Ala magna ossis 

 sphenoidalis 



Os parietale --/-- f. 



Corpus oss. 

 sphenoidalis 



Squama 

 temporalis 



Pars basilaris 

 oss. occip. 



Pars petrosa 

 ossis tempo- 

 ralis 



Pars 

 mastoidea 



ossis 

 temporalis 



Squama 

 occipitalis 



Foramen 

 occipitale 

 magnum 



Sutura 

 \- sphenoparietalis 



Foramen rotundum 

 Sutura spheno- 



squamosa 

 Foramen ovale 



-r-\ Foramen spinosum 



Foramen lacerum 

 Hiatus canalis 



facialis 

 Fissura petro- 



occipitalis 

 Apertura externa 



canal, cochleae 



Sulcus sigmoideus 



J Sutura 



parietomastoidea 

 Sutura occipito- 

 mastoidea 



- Sutura lambdoidea 



X" *--//--- /-/ Sulcus transversus 



64. Base of the skull, from within, basis crariri interna, 



with names of various parts. 



