Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota J.R. Wagner, 2004 [J. Wiemann et al., 2020]
           1 ?viruses
           2 Domain Bacteria Woese et al., in Göker & Oren, 2024
           2.n Clade neomura T. Cavalier-Smith, 1987