Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct. see Subphylum Vertebrata Cuvier, 1812
       Vertebrata (Lamarck, 1801) - vertebrates see Subphylum Vertebrata Cuvier, 1812
         Myopterygii - myopterygians
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
             Grade Teleostomi Bonaparte, 1836
               Euteleostomi - bony vertebrates
                 Class Actinopterygii Woodward, 1891 - ray-finned fishes
                   Subclass Neopterygii Regan, 1923
                     Division Teleostei Müller, 1845 see Infraclass Teleostei Müller, 1845
                       Subdivision Osteoglossomorpha Greenwood et al., 1966 see Cohort Osteoglossomorpha Greenwood et al., 1966
                         Order Osteoglossiformes Berg, 1940 - bonytongues
                           Family Osteoglossidae Bonaparte, 1845, sedis mutabilis - bonytongues and arapaimas
                             Subfamily Osteoglossinae Nelson, 1968
                               Genus Scleropages Günther, 1864
                                 Scleropages formosus (Müller & Schlegel, 1840) - arowana