Apex of petrous part of temporal boneCheck our Apps3D Heart AnatomyXR Anatomy3D Osteology 3D OsteologyAll visual materials are sourced directly from the app 3D OsteologyLearn MoreThe apex of the petrous part is the tip of the petrous part of the temporal bone. It articulates in an angle created by the greater wing of the sphenoid bone and the basilar part of the occipital bone. (3,15)