Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct.
       Vertebrata Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
         Myopterygii Janvier, 1978 - myopterygians
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
             Grade Teleostomi Bonaparte, 1836 see Clade Pan-Osteichthyes Rowe 2004 [Moore & Near 2020]
               Euteleostomi - bony vertebrates see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
                 Class Actinopterygii Woodward, 1891 - ray-finned fishes see Clade Actinopterygii Woodward 1891 [Moore & Near 2020]
                   Subclass Neopterygii Regan, 1923
                     Division Teleostei Müller, 1845
                       Elopocephala Arratia, 1999 see Supercohort Teleocephala de Pinna, 1996
                         Subdivision Elopomorpha Greenwood et al., 1966 see Cohort Elopomorpha Greenwood et al., 1966
                           Order Anguilliformes Berg, 1943 - eels
                             Suborder Congroidei Regan, 1909
                               Family Ophichthidae Günther, 1870 - snake eels and worm eels
                                 Subfamily Ophichthinae Günther, 1870 - snake eels
                                   01 Genus Apterichtus Duméril, 1805
                                   02 Genus Cirricaecula Schultz, 1953
                                   03 Genus Ichthyapus Brisout de Barneville, 1847
                                   04 Genus Bascanichthys Jordan & Davis, 1891
                                   05 Genus Caecula Vahl, 1794
                                   06 Genus Callechelys Kaup, 1856
                                   07 Genus Cirrhimuraena Kaup, 1856
                                   08 Genus Dalophis Rafinesque, 1810
                                   09 Genus Echelus Rafinesque, 1810
                                   10 Genus Echiophis Kaup, 1856
                                   11 Genus Ethadophis Rosenblatt & McCosker, 1970
                                   12 Genus Lamnostoma Kaup, 1856
                                   13 Genus Letharchus Goode & Bean, 1882
                                   14 Genus Myrichthys Girard, 1859
                                   15 Genus Mystriophis Kaup, 1856
                                   16 Genus Ophichthus Ahl, 1789
                                   17 Genus Phaenomonas Myers & Wade, 1941
                                   18 Genus Pisodonophis Kaup, 1856
                                   19 Genus Yirrkala Whitley, 1940