Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Biota
           [Superkingdom Eukaryonta] see Domain Eukaryota Chatton, 1925
             [Suprakingdom Animalia Linnaeus, 1758] see Kingdom Animalia Linnaeus, 1758
               [Midkingdom Eumetazoa Butschli, 1910]
                 [Kingdom Bilateralia] see Clade Bilateria Hatschek, 1888
                   [Interkingdom Aproctophora]
                     [Infrakingdom Acoelomata] see Grade Acoelomates Hyman, 1951
                       1 [Superphylum Parenchymata] see Clade Parenchymia
                       2 [Superphylum Mesozoia] see Grade Mesozoa van Beneden, 1876