Os supra petrosum of Meckel.
D002675:Child, Preschool; D004388:Dura Mater / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D010579:Petrous Bone / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D011859:Radiography