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.
               [Subkingdom "Unibacteria" Cavalier-Smith 1998] see Subkingdom Unibacteria Cavalier-Smith 2002
                 [Infrakingdom "Posibacteria" (Cavalier-Smith 1987) Cavalier-Smith 1998] see Domain Bacteria Woese et al. 1990 stat. inval.
                   [Phylum "Posibacteria"ᵀ Cavalier-Smith 1987] see Phylum Posibacteria Cavalier-Smith 1987 ex Cavalier-Smith 2002
                     [Subphylum Teichobacteria Cavalier-Smith 1998] see Domain Bacteria Woese et al. 1990 stat. inval.
                       [Infraphylum Endobacteria T. Cavalier-Smith 1998] see Phylum Firmicutes (Gibbons and Murray 1978) Garrity and Holt 2001 stat. inval.
                         1 [Class Clostridea Cavalier-Smith 1982] see Class Clostridia "Garrity and Holt 2001" nom. nud.