[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 Teleostei Müller, 1845 see Infraclass Teleostei Müller, 1845 Branch Plectognathi [monotypic] Order Plectognathi see Order Tetraodontiformes Berg, 1937 Genus Diodon Linnaeus, 1758 - porcupinefish