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
                 ["Budding and/or appendaged bacteria"] see Class Alphaproteobacteria Garrity and Holt 2001 nom. nud.
                   [Genus Caulococcus]
                   [Genus Kusnezovia]
                   [Genus Metallogenium]
                   [Genus Thiodendron]
                   1 [Hyphomicrobium group] see Family Hyphomicrobiaceae Babudieri 1950 (Approved Lists 1980)
                   2 ["Caulobacters"] see Family Caulobacteraceae Henrici and Johnson 1935 (Approved Lists 1980)
                   3 ["Prosthecomicrobia"] see Family Hyphomicrobiaceae Babudieri 1950 (Approved Lists 1980)
                   4 ["Planctomyces" Gimesi, 1924] see Family Planctomycetaceae Schlesner and Stackebrandt 1987