Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           [Empire Prokaryota (Dougherty 1957) Allsopp 1969] see Domain Bacteria Woese et al. 1990 stat. inval.
             [Kingdom "Bacteria" Cavalier-Smith 1998 nom. inval. - bacteria] see Kingdom Bacteria Cavalier-Smith 2002 stat. inval.
               [Phylum Gracilicutes] see Subkingdom Negibacteria Cavalier-Smith 2002 stat. inval.