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
                         Clupeocephala Patterson & Rosen, 1977 see Cohort Clupeocephala Patterson & Rosen, 1977
                           Order †Crossognathiformes Taverne, 1989
                             Suborder †Pachyrhizodontoidei Forey, 1977
                               Family †Pachyrhizontidae Nelson, 2006, nom. null. see Family Pachyrhizodontidae Cope, 1872
                                 1 Genus †Elopopsis Heckel, 1856
                                 2 Genus †Greenwoodella Taverne & Ross, 1973
                                 3 Genus †Pachyrhizodontus Nelson, 2006, nom. nud.
                                 4 Genus †Pachyrhizodus Dixon, 1850
                                 5 Genus †Platinx Agassiz, 1835
                                 6 Genus †Rhacolepis Agassiz, 1844