eukaryotes see Domain Eukaryota Chatton, 1925 Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa Subkingdom Natozoa Cavalier-Smith, 2021 [paraphyletic] Infrakingdom Archezoa Cavalier-Smith, 1983 [monotypic] see Phylum Metamonada Grassé, 1952 Phylum Metamonada Grassé, 1952 Subphylum Trichozoa Cavalier-Smith, 1997 1 Infraphylum Parabasalia Honigberg, 1973 2 Infraphylum Fornicata Simpson, 2003