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  Animalia
      Arthropoda
        Hexapoda
               [Apterygota]
            Insecta
              Pterygota
                Palaeoptera
                       [Paleoptera]
                    Ephemeroptera
                      Pisciforma
                            Siphlonuridae
                                   [Siphluridae]
                                     Edmundsius
                                             Edmundsius agilis
                                     Parameletus
                                             Parameletus chelifer
                                                   [Sparrea norvegica]
                                             Parameletus columbiae
                                             Parameletus croesus
                                                   [Siphlonuroides croesus]
                                             Parameletus midas
                                                   [Siphlonuroides midas]
                                     Siphlonisca
                                             Siphlonisca aerodromia
                                                   [Siphlonurus aerodromia]
                                     Siphlonurus
                                             Siphlonurus alternatus
                                                   [Baetis alternata]
                                                   [Baetis alternatus]
                                                   [Baetis annulata]
                                                   [Baetis annulatus]
                                                   [Siphlonurus annulata]
                                                   [Siphlurella alternata]
                                                   [Siphlurus alternans]
                                                   [Siphlurus alternatus]
                                             Siphlonurus autumnalis
                                             Siphlonurus barbaroides
                                             Siphlonurus barbarus
                                             Siphlonurus columbianus
                                             Siphlonurus decorus
                                             Siphlonurus demaryi
                                             Siphlonurus flavidus
                                             Siphlonurus luridipennis
                                                   [Baetis luridipennis]
                                                   [Ecdyurus luridipennis]
                                                   [Heptagenia luridipennis]
                                             Siphlonurus marginatus
                                             Siphlonurus marshalli
                                             Siphlonurus minnoi
                                             Siphlonurus mirus
                                                   [Siphlurus mirus]
                                             Siphlonurus occidentalis
                                                   [Siphlonurus inflatus]
                                                   [Siphlurella occidentalis]
                                                   [Siphlurus occidentalis]
                                             Siphlonurus phyllis
                                             Siphlonurus quebecensis
                                                   [Baetis canadensis]
                                                   [Siphlonurus triangularis]
                                                   [Siphlurus quebecensis]
                                             Siphlonurus rapidus
                                             Siphlonurus securifer
                                             Siphlonurus spectabilis
                                                   [Siphlonurus maria]
                                             Siphlonurus typicus
                                                   [Siphlonurus berenice]
                                                   [Siphlonurus novangliae]
                                                   [Siphlurus typicus]