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]
           [Superkingdom Eukaryonta] see Domain Eukaryota Chatton, 1925
             [Suprakingdom Animalia Linnaeus, 1758] see Kingdom Animalia Linnaeus, 1758
               [Midkingdom Eumetazoa Butschli, 1910]
                 [Kingdom Bilateralia] see [unranked] Bilateria Hatschek, 1888
                   [Interkingdom Proctophora] see [unranked] Bilateria Hatschek, 1888
                     [Infrakingdom Nemertinea] see Phylum Nemertini
                       [Superphylum Nemertina] see Phylum Nemertini