Vertebrata Cuvier, 1812 - vertebrates
Gnathostomata
Teleostomi
Class Osteichthyes Huxley, 1880 [paraphyletic] - bony fishes
see [unranked] Euteleostomi
Subclass Actinopterygii Woodward, 1891 - ray-finned fishes
see Class Actinopterygii Woodward, 1891
Infraclass Neopterygii Regan, 1923
see Subclass Neopterygii Regan, 1923
Division Teleostei Müller, 1845
see Infraclass Teleostei Müller, 1845
Subdivision Euteleostei Greenwood et al., 1966
see Cohort Euteleosteomorpha (Greenwood et al., 1966)
Superorder Paracanthopterygii Greenwood, Rosen, Weitzman & Myers, 1966
Order Ophidiiformes Rafinesque, 1810 - cusk-eels
1 Family Ophidiidae Jordan & Evermann, 1898 - cuskeels
2 Family Carapidae Jordan & Fowler, 1902 - pearlfishes
3 Family Pyramodontidae
see Subfamily Pyramodontinae