Kingdom Animalia (animals) Eumetazoa (metazoans) Bilateria (bilaterally symmetrical animals) Deuterostomia (deuterostomes) Phylum Chordata (chordates) Craniata (craniates) Subphylum Vertebrata (vertebrates) Class Cephalaspidomorphi (lampreys) Order Petromyzontiformes (lampreys) Family Petromyzontidae (lampreys) Genus Mordacia Species Mordacia lapicida (Chilean lamprey) Species Mordacia mordax (Australian lamprey) Species Mordacia praecox (Non-parasitic lamprey)
