eukaryotes see Domain Eukaryota Chatton, 1925
   Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa
     Subkingdom Natozoa Cavalier-Smith, 2021 [paraphyletic]
       Infrakingdom Eozoa Cavalier-Smith, 1997 see Clade Discoba Simpson 2009
         Superphylum Discicristata Cavalier-Smith, 1998
           Phylum Percolozoa Cavalier-Smith, 1992
             Subphylum Orthozoa Cavalier-Smith, 2021
               Class Lunosea Cavalier-Smith, 2021 [monotypic]
                 Order Selenaionida Hanousková et al., 2019
                   Genus Selenaion Park, De Jonckheere & Simpson, 2012