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Organism
  Chromista
         [Microbe]
      Chrysophyta
            Bacillariophyceae
                          Cerithioidea
                            Modulidae
                                     Modulus
                                     Modulus
                                             Modulus modulus
                                     Trochomodulus
                                             Trochomodulus carchedonius
                                                   [Modulus carchedonius]