Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [[crown] organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           [Eukaryota Chatton, 1925 - eukaryotes] see Domain Eukaryota Chatton, 1925
             [Phylum Actinopoda Calkins, 1902]
               [Class Radiolaria Müller, 1858] see Phylum Radiolaria Müller, 1858
                 [Order Polycystinea Ehrenberg, 1838] see Class Polycystinea Ehrenberg, 1838