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Organism
  Chromista
         [Microbe]
  Plantae
      Chrysophyta
             [Algae]
            Bacillariophyceae
                    Pennales
                            Diatomaceae
                                     Fragilariforma
                                             Fragilariforma acidobiontica
                                             Fragilariforma bicapitata
                                             Fragilariforma constricta
                                                   Fragilariforma constricta f. stricta
                                               Fragilariforma constricta var. trinodis
                                             Fragilariforma floridana
                                             Fragilariforma hungarica
                                               Fragilariforma hungarica var. tumida
                                             Fragilariforma lata
                                             Fragilariforma nitzschioides
                                             Fragilariforma polygonata
                                             Fragilariforma strangulata
                                             Fragilariforma virescens
                                               Fragilariforma virescens var. capitata
                                     Pseudostaurosiropsis
                                             Pseudostaurosiropsis connecticutensis
                                             Pseudostaurosiropsis geocollegarum
                                     Punctastriata
                                             Punctastriata lancettula
                                     Rhaphoneis
                                             Rhaphoneis amphiceros
                                     Thalassionema
                                             Thalassionema nitzschioides