Description
A, The outer surface of the right temporal bone at birth. B, The same with squamozygomatic portion removed. Labels: a, tympanic ring; b, inner wall of tympanum; c, fenestra rotunda; d, foramen ovale; e, mastoid; f, mastoid process; g, mastosquamosal suture, with foramen for transmission of vessels; h, squamozygomatic, removed in figure B to show how its descending process forms the outer wall of the mastoid antrum.
