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Organism
  Animalia
      Mollusca
            Gastropoda
                    Stylommatophora
                      Helicina
                            Helicarionidae
                                     Epiglypta
                                             Epiglypta howeinsulae
                                                   [Helix howinsulae]
                                     Eufretum
                                             Eufretum placita
                                                   [Orpiella placitum]
                                             Eufretum ramsayi
                                                   [Orpiella ramsayi]
                                     Fanulum
                                     Fijia
                                             Fijia macgillivrayi
                                                   [Orpiella macgillivrayi]
                                             Fijia plicostriata
                                                   [Orpiella plicostriata]
                                     Gudeoconcha
                                             Gudeoconcha sophiae
                                                   [Nanina sophiae]
                                     Helicarion
                                             Helicarion aureus
                                                   [Vitrina aurea]
                                             Helicarion melanesicus
                                             Helicarion planospirus
                                                   [Helicarion malaitaensis]
                                             Helicarion schneideri
                                             Helicarion willeyana
                                     Howearion
                                             Howearion hilli
                                                   [Helicarion hilli]
                                     Irenella
                                             Irenella hoyti
                                                   [Orpiella hoyti]
                                             Irenella nouleti
                                                   [Orpiella nouleti]
                                             Irenella otarae
                                                   [Orpiella otareae]
                                             Irenella pfeifferi
                                                   [Orpiella pfeifferi]
                                     Nesonanina
                                             Nesonanina unidentata
                                     Ovachlamys
                                             Ovachlamys fulgens
                                     Parmella
                                             Parmella planata
                                     Pseudosesara
                                             Pseudosesara tabwemanana
                                     Quirosella
                                             Quirosella coultasi
                                             Quirosella knudseni
                                             Quirosella wolffi
                                     Sitala
                                             Sitala jenynsi
                                                   [Trochonanina jenynsi]
                                     Thalassia