eukaryotes see Domain Eukaryota Chatton, 1925
   Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa
     Subkingdom Natozoa Cavalier-Smith, 2021 [paraphyletic]
       1 Infrakingdom Archezoa Cavalier-Smith, 1983 [monotypic] see Phylum Metamonada Grassé, 1952
       2.1['2'] Infrakingdom Eozoa Cavalier-Smith, 1997 see Clade Discoba Simpson 2009
       2.2.1-n1['3'] Infrakingdom Hemimastigophora Foissner, Blatterer & Foissner, 1998 [sister group to excluded taxa] [monotypic] see Phylum Hemimastigophora Foissner, Blatterer & Foissner, 1988