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
               "protists" incertae sedis
                 Group †Acritarcha Evitt, 1963, incertae sedis [polyphyletic] - acritarchs
                   Genus †Visbysphaera Lister, 1970
                     †Visbysphaera bringewoodense G.L. Mullins (2004)
                     [†Visbysphaera dilatispinosumᵀ (Downie, 1963)] see Visbysphaera pirifera (Eisenack, 1954)
                     †Visbysphaera lamina G.L. Mullins (2004)
                     †Visbysphaera microspinosa
                     †Visbysphaera piriferaᵀ (Eisenack, 1954)