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Organism
  Chromista
         [Microbe]
      Chrysophyta
            Bacillariophyceae
                          Thracioidea
                            Thraciidae
                                     Asthenothaerus
                                             Asthenothaerus diegensis
                                             Asthenothaerus hemphilli
                                     Thracia
                                             Thracia conradi
                                             Thracia septentrionalis
                                             Thracia trapezoides