[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
         Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
           Subclass Sarcopterygii Romer, 1955 - lobe-finned fishes and tetrapods see [unranked] Sarcopterygii Romer, 1955
             Infraclass †Osteolepidida Boulenger, 1901 [monotypic] see [unranked] Osteolepidimorpha
               Order †Osteolepidiformes Berg, 1937
                 Suborder †Cyclolepidoidei Borgen & Nakrem, 2016
                   Family †Tristichopteridae Cope, 1887
                     1 Genus †Tristichopterus Egerton, 1861
                     2 Genus †Eustenopteron Steindachner, 1881, orth. inval. see Genus Eusthenopteron Whiteaves, 1881
                     3 Subfamily †Platycephalichthyinae Vorobyeva, 1975
                     4 Genus †Notorhizodon Young, Long & Ritchie, 1992
                     5 Subfamily †Mandageriinae Young, 2008