The large, irregular bone located at the base and side of the skull; consists of three parts at birth: squamous, tympanic, and petrous.
Comment:
[structure-note] "The temporal bone consists of four parts: * Squama temporalis * Mastoid portion * Petrous portion (Petrosal ridge) * Tympanic part[WP]." xsd:string {source="[WP]"}; [taxon-note] "fusion of squamosal + angular (tympanic annulus) [derm.] + petrosal (prootic + opisthotic)" xsd:string {source="chond."}; [taxon-note] "In many mammals, as in humans, the petrosal, ectotympanic and squamosal bones synostose to form the temporal bone + styloid process"