Late Ordovician - Recent | image = Orca-Schädel.jpg | image_width= 200px | image_caption = Gnathostomata are jawed vertebrates | regnum = Animalia | phylum = Chordata | subphylum = Vertebrata | infraphylum = Gnathostomata | subdivision_ranks = Subgroups | subdivision = Placodermi † Chondrichthyes Acanthodii † Actinopterygii Sarcopterygii }} Gnathostomata 's the group of vertebrates with jaws. The term derives from Greek γνάθος (gnathos) "jaw" + `… (More on Gnathostomata)