Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801 Pisces Class Actinopterygii Woodward, 1891 - ray-finned fishes see Clade Actinopterygii Woodward 1891 [Moore & Near 2020] Order Notacanthiformes Goodrich, 1909 - halosaurs and deep-sea spiny eels Family Halosauridae Günther, 1868 - halosaurs Family Lipogenyidae see Family Notacanthidae Rafinesque, 1810 Family Notacanthidae Rafinesque, 1810 - deepsea spiny eels