Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Pisces Class Actinopterygii Woodward, 1891 - ray-finned fishes Order Anguilliformes Rafinesque, 1810 - eels Family Ophichthidae Günther, 1870 - snake eels and worm eels