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]
           [Kingdom Protista (Haeckel, 1866) - protists]
             [Phylum Spongiae] see Phylum Spongia
               [Petrospongiae]
                 1 [Order Siphonida]
                 2 [Order Ocellarida]
                 3 [Order Lymnorida]
                 4 [Order Bothroconida]
                 5 [Order Turonida]