life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Empire Eukaryota (Chatton, 1925) see Domain Eukaryota Chatton, 1925
     Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa
       Subkingdom Neozoa Cavalier-Smith, 1993 [paraphyletic] see Kingdom Protozoa Goldfuss, 1818
         Infrakingdom Alveolata Cavalier-Smith, 1991 see [unranked] Alveolata Cavalier-Smith, 1991
           Superphylum Heterokaryota Hickson, 1903 [monotypic]
             1 Phylum Ciliophora Doflein, 1901 - ciliates