Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Biota
           "neomura"
             Domain Eukaryota Chatton, 1925 - eukaryotes
               neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes
                 [plesion] Phylum Percolozoa Cavalier-Smith, 1991
                   [Subphylum] Pharyngomonadia
                   1 Subphylum Tetramitiaᵀ Cavalier-Smith, 1993
                   2 Subphylum Pharyngomonada [monotypic]