[Kingdom] Animalia Linnaeus, 1758 - animals Grade Enterozoa Grade Cœlomata Phylum Vertebrata (Lamarck, 1801) Branch Craniata Linnaeus, 1758 Grade Gnathostoma Subgrade Heterodactyla branchiata Class Pisces Linnaeus, 1758 see Superclass Pisces Linnaeus, 1758 Subclass Ganoidæ Order †Acanthodini 1 Genus †Acanthodes Agassiz, 1833 2 Genus †Diplacanthus Agassiz, 1844