Fishes
   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
       1 Family Halosauridae Günther, 1868 - halosaurs
       2 Family Notacanthidae Rafinesque, 1810 - deepsea spiny eels