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Organism
  Plantae
      Tracheophyta
             [Equisetophyta]
             [Pteridophyta]
        Polypodiophytina
            Polypodiopsida
                   [Cyatheopsida]
                   [Equisetopsida]
                   [Filicopsida]
                   [Gleicheniopsida]
                   [Hymenophyllopsida]
                   [Marattiopsida]
                   [Marsileopsida]
                   [Matoniopsida]
                   [Osmundopsida]
                   [Psilotopsida]
                   [Pteridopsida]
                   [Salviniopsida]
                   [Sphenopsida]
              Equisetidae
                    † IncertaeSedis_EquisetidaeOrder
                            † IncertaeSedis_EquisetidaeFamily
                                     † Arthroxylon
                                     † Calamariophyllum
                                             † Calamariophyllum zeaeformis
                                     † Calamodendrostachys
                                     † Equisetina
                                     † Litostrobus
                                             † Litostrobus iowensis
                                     † Macrostachya
                                             † Macrostachya aperta
                                             † Macrostachya communis
                                             † Macrostachya hauchecornei
                                             † Macrostachya infundibuliformis
                                             † Macrostachya lanceolata
                                             † Macrostachya minor
                                     † Oncylogonatum
                                             † Oncylogonatum carbonarium
                                     † Protocalamites
                                             † Protocalamites dorfi
                                     † Raniganjia
                                             † Raniganjia minima