Class Actinopterygii Woodward, 1891 - ray-finned fishes Subclass Neopterygii Regan, 1923 Infraclass Teleostei Müller, 1845 Supercohort Teleocephala de Pinna, 1996 Cohort Elopomorpha Greenwood et al., 1966 Order Notacanthiformes Goodrich, 1909 - spiny eels 1 Family Halosauridae Günther, 1868 - halosaurs 2 Family Notacanthidae Rafinesque, 1815 - spiny eels