eukaryotes see Domain Eukaryota Chatton, 1925
   Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa
     Subkingdom Eozoa Cavalier-Smith, 1997 [paraphyletic] see Infrakingdom Eozoa Cavalier-Smith, 1997
       Infrakingdom Excavata T. Cavalier-Smith, 2002 [paraphyletic] see Supergroup Excavata Cavalier-Smith, 2002
         Phylum Loukozoa Cavalier-Smith, 1999 [paraphyletic]
           Subphylum Eolouka Cavalier-Smith, 2012 [paraphyletic]
             Class Jakobea Cavalier-Smith, 1997 [monotypic]
               Order Jakobida Cavalier-Smith, 1993
                 Suborder Histionina Cavalier-Smith, 1993
                   Family Histionidae Flavin & Nerad, 1993
                     1 Genus Reclinomonas Flavin & Nerad, 1993
                     2 Genus Histiona Voigt, 1902