part of part of Homo sapiens temporal bone bone foramen stylomastoid foramen of petrous part of temporal bone 2026-03-19T00:00:00Z A bone foramen located on the inferior surface of the petrous part of the temporal bone between the base of the styloid process and the mastoid process. It is the point of exit of the facial nerve (CN VII) from the facial canal into the parotid region. David Osumi-Sutherland