Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Biota
           "neomura"
             Domain Eukaryota Chatton, 1925 - eukaryotes
               [Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa]
                 [Subkingdom Sarcomastigota Cavalier-Smith, 1983 [paraphyletic]] see Superphylum Sarcomastigota Cavalier-Smith, 1983
                   [Phylum Choanozoa Cavalier-Smith, 1981 [paraphyletic]] see Phylum Choanoflagellata Kent, 1880
                     [Class Aphelidea B.V. Gromov, 2000] see Order Aphelidida Cavalier-Smith, 2013