eukaryotes see Domain Eukaryota Chatton, 1925
   Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa
     Subkingdom Sarcomastigota Cavalier-Smith, 1983 [paraphyletic] see [unranked] dorsates Cavalier-Smith, 2021
       Phylum Choanozoa Cavalier-Smith, 1981 [paraphyletic]
         Subphylum Paramycia Cavalier-Smith, 2012 see Kingdom Nucleariae Tedersoo, Sánchez-Ramírez, Kõljalg, Bahram, Döring, Schigel, May, Ryberg & Abarenkov, 2018
           Class Rozellidea Cavalier-Smith, 2012
             Order Aphelidida Cavalier-Smith, 2012, nom. illeg. see Order Aphelidida Gromov, 2000
               Family Aphelidiidae Cavalier-Smith, 2012, nom. illeg. [monotypic] see Family Aphelididae Gromov, 2000
                 Genus Aphelidium Zopf, 1884