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  Animalia
      Arthropoda
        Hexapoda
               [Apterygota]
            Insecta
              Pterygota
                Palaeoptera
                       [Paleoptera]
                    Ephemeroptera
                      Furcatergalia
                        Scapphodonta
                          Ephemeroidea
                            Palingeniidae
                                     Pentagenia
                                             Pentagenia robusta
                                             Pentagenia vittigera
                                                   [Palingenia vittigera]
                                                   [Pentagenia quadripunctata]