Kingdom [Animalia] Linnaeus, 1758 - animals
   Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997, nom. cl. inval. - ecdysozoans see Clade Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997 [Lake, Halanych, Servin & Garey 2020]
     Panarthropoda Nielsen, 1995 - panarthropods
       Tritocerebra see [unranked] Tactopoda Budd, 2001
         Phylum Arthropoda Siebold, 1848 - arthropods
           Subphylum Mandibulata Snodgrass, 1938
             Infraphylum Atelocerata see [unranked] Mandibulata
               Superclass Panhexapoda
                 Epiclass Hexapoda Latreille, 1825 see Superclass Hexapoda Latreille, 1825
                   Class Insecta Linnaeus, 1758 - insects
                     Dicondylia Haeckel, 1866 see Subclass Dicondylia Haeckel, 1866
                       Pterygota Lang, 1888 see Infraclass Pterygota Lang, 1888
                         Order Ephemeroptera Hyatt & Arms, 1891 - mayflies
                           Suborder †"Permoplectoptera" (Tillyard, 1932)
                             01 Family †Protereismatidae Lameere, 1917
                             02 Family †Misthodotidae Tillyard, 1932
                             03 ?Family †Jarmilidae Demoulin, 1970b
                             04 ?Family †Oboriphlebiidae Hubbard & Kukalova-Peck, 1980
                             04.0 ?Family †"Oborophlebiidae" see Family Oboriphlebiidae Hubbard & Kukalova-Peck, 1980
                             05 Family †Palingeniopsidae Martynov, 1938
                             06 Family †Litophlebiidae Hubbard & Riek, 1978
                             07 ?Genus †Thuringopteryx Kuhn, 1937
                             08 Family †Mesoplectopteridae Demoulin, 1955
                             09 Superfamily †Mesephemeroidea Lameere, 1917
                             10 Family †Tintoriniidae see Family Tintorinidae Krzeminski & Lombardo, 2001