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Organism
  Chromista
         [Microbe]
      Chrysophyta
            Bacillariophyceae
                    Pennales
                            Achnanthaceae
                                     Achnanthes
                                     Berkeleya
                                     Cocconeis
                                     Delphineis
                                     Karayevia
                                     Lemnicola
                                     Planothidium
                                     Platessa
                                     Psammothidium
                                     Rossithidium