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 Prokaryotae] see Superkingdom Prokarya
             [Kingdom Monera Haeckel 1866] see Domain Bacteria Woese et al. 1990
               [Division Bacteria (Haeckel 1894)] see Domain Bacteria Woese et al. 1990
                 ["Methane-producing Bacteria" [monotypic]]