Kingdom Animalia Linnaeus, 1758 - animals Phylum Craniata Linnaeus, 1758 see Subphylum Craniata auct. Pisces Class Cephalaspidomorphi Kiaer & Stensiö, 1920 see Class Osteostraci Lankester, 1868 Order Petromyzontiformes Berg, 1940 - lampreys 1 Family Petromyzontidae Bonaparte, 1831 - lampreys