Thinnest pa of the skull
The anterior pa of the floor of the temporal fossa is crossed by an H shaped suture where four bones,frontal,parietal,greater wing of sphenoid and temporal adjoin each other.This area is termed the pterion. REF.B D Chaurasia's Human Anatomy VOL.3,Fouh edition
Lambdoid suture
Temporal pa of bone
Pterion
Occiput
Head and neck