Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates 1 Superclass Agnatha Haeckel, 1895 see Class Agnatha Cope, 1889 2 Superclass Pisces Linnaeus, 1758 - fishes 3 Superclass Reptilia Linnaeus, 1758 4 Superclass Homotherma