Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade Discoba Simpson 2009
                       Class Jakobea Cavalier-Smith, 1997 [coordinate rank] [monotypic]
                         Order Jakobidaᵀ Cavalier-Smith, 1993
                           Suborder Histionina Cavalier-Smith, 1993
                             Family Histionidaeᵀ Flavin & Nerad, 1993
                               Genus Histionaᵀ Voigt, 1902
                                 Histiona aroides A.A. Pascher, 1943
                                 ?Histiona campanula E. Penard, 1921
                                 Histiona velifera (M. Voigt, 1901) A.A. Pascher, 1943