Class Actinopterygii Woodward, 1891 - ray-finned fishes see Clade Actinopterygii Woodward 1891 [Moore & Near 2020] Subclass Neopterygii Regan, 1923 Infraclass Teleostei Müller, 1845 see Division Teleostei Müller, 1845 Supercohort Teleocephala de Pinna, 1996 - crown-group Teleostei Cohort Elopomorpha Greenwood et al., 1966 Order Notacanthiformes Goodrich, 1909 - halosaurs and deep-sea spiny eels 1 Family Halosauridae Günther, 1868 - halosaurs 2 Family Notacanthidae Rafinesque, 1810 - deepsea spiny eels