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 Discicristata Cavalier-Smith, 1998 see Superphylum Discicristata Cavalier-Smith, 1998
           Phylum Euglenozoa Cavalier-Smith, 1981
             Subphylum Saccostoma T. Cavalier-Smith, 1998 see Phylum Euglenozoa Cavalier-Smith, 1981
               Class Postgaardea T. Cavalier-Smith, 1998 [monotypic]
                 1 Genus Postgaardi T. Fenchel et al., 1995