Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum "Proteobacteria" Craig et al. 2010
               Phylum "Betaproteobacteria" Garrity et al., 2006 [monotypic]
                 Class Betaproteobacteriaᵀ Garrity et al. 2006
                   Order Rhodocyclales Garrity et al. 2006 [monotypic]
                     Family Rhodocyclaceaeᵀ Garrity et al. 2006
                       Genus Sulfurisoma Kojima and Fukui 2014
                       Genus Sulfuritalea Kojima and Fukui 2011
                       01 Genus Rhodocyclusᵀ Pfennig 1978 (Approved Lists 1980)
                       02 Genus Azoarcus Reinhold-Hurek et al. 1993
                       03 Genus Azonexus Reinhold-Hurek and Hurek 2000
                       04 Genus Azospira Reinhold-Hurek and Hurek 2000
                       05 Genus Azovibrio Reinhold-Hurek and Hurek 2000 [monotypic]
                       06 Genus Dechloromonas Achenbach et al. 2001
                       07 Genus Denitratisoma Fahrbach et al. 2006 [monotypic]
                       08 Genus Ferribacterium Cummings et al. 2000 [monotypic]
                       09 Genus Georgfuchsia Weelink et al. 2011 [monotypic]
                       10 Genus Methyloversatilis Kalyuzhnaya et al. 2006
                       11 Genus Propionivibrio Tanaka et al. 1991
                       12 Genus Quatrionicoccus Tindall and Euzéby 2006 [monotypic]
                       13 Genus Sterolibacterium Tarlera and Denner 2003 [monotypic]
                       14 Genus Thauera Macy et al. 1993
                       15 Genus Uliginosibacterium Weon et al. 2008 [monotypic]
                       16 Genus Zoogloea Itzigsohn 1868 (Approved Lists 1980)