from The Century Dictionary and Cyclopedia
- Pertaining to the petrous and the squamosal parts of the temporal bone.
Sorry, no etymologies found.
Its lateral edge corresponds with the remains of the petrosquamous suture.
The petrosquamous sinus, when present, runs backward along the junction of the squama and petrous portion of the temporal, and opens into the transverse sinus.
The anterior surface forms the posterior part of the middle fossa of the base of the skull, and is continuous with the inner surface of the squamous portion, to which it is united by the petrosquamous suture, remains of which are distinct even at a late period of life.
The anterior angle is divided into two partsa lateral joined to the squama by a suture (petrosquamous), the remains of which are more or less distinct; a medial, free, which articulates with the spinous process of the sphenoid.