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 Andalucina Cavalier-Smith, 2012
                             Family Stygiellidae Pánek, Táborský, Pachiadaki, Hroudová, Vlček, Edgcomb & Čepička, 2015
                               1 Genus Velundella Pánek, Táborský, Pachiadaki, Hroudová, Vlček, Edgcomb & Čepička, 2015
                               2 Genus Stygiella Pánek, Táborský, Pachiadaki, Hroudová, Vlček, Edgcomb & Čepička, 2015