eukaryotes see Domain Eukaryota Chatton, 1925
   Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa
     Subkingdom Sarcomastigota Cavalier-Smith, 1983 [paraphyletic] see [unranked] dorsates Cavalier-Smith, 2021
       Infrakingdom Diacentrida Cavalier-Smith, 2021 [paraphyletic] see [unranked] torcids Cavalier-Smith, 2021
         Phylum Amoebozoa Lühe, 1913
           Subphylum Discosa Cavalier-Smith, 2021 [monotypic]
             Class Discosea Cavalier-Smith, 2004
               1 [Subclass] Flabellinia Smirnov et al., 2005
               2 [Subclass] Centramoebia Cavalier-Smith, Chao & Lewis, 2016