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Organism
  Chromista
         [Microbe]
      Chrysophyta
            Bacillariophyceae
                            Naetrocymbaceae
                                     Leptorhaphis
                                             Leptorhaphis atomaria
                                             Leptorhaphis epidermidis
                                     Tomasellia
                                             Tomasellia americana
                                             Tomasellia californica