Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Superclass Pisces Linnaeus, 1758 - fishes Chondrichthyes Huxley, 1880 - cartilaginous fishes Family Ginglymostomatidae Gill, 1862 - nurse sharks Genus Ginglymostoma Müller & Henle, 1837 1 Ginglymostoma brevicaudatum Günther, 1866 see Pseudoginglymostoma brevicaudatum (Günther, 1866)