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?]
             [Phylum "Proteobacteria" Garrity and Holt 2001] see Phylum Proteobacteria Garrity et al. 2005
               [Class "Gammaproteobacteria" nom. inval.] see Class Gammaproteobacteria Garrity et al. 2005
                 01.2 [Order "Chromatiales" Garrity et al. 2001 nom. ined.] see Order Chromatiales Imhoff 2005
                 02 [Order "Acidithiobacillales" Garrity et al. 2001 nom. ined.] see Order Acidithiobacillales Garrity et al. 2005
                 03 [Order "Xanthomonadales"] see Order Xanthomonadales Saddler and Bradbury 2005
                 04 [Order "Cardiobacteriales" nom. inval.] see Order Cardiobacteriales Garrity et al. 2005
                 05 [Order "Thiotrichales"] see Order Thiotrichales Garrity et al. 2005
                 06 [Order "Legionellales" Garrity and Holt 2001 nom. nud.] see Order Legionellales Garrity et al. 2005
                 07 [Order "Methylococcales" nom. inval.] see Order Methylococcales Bowman 2005
                 08 [Order "Oceanspirillales"] see Order Oceanospirillales Garrity et al. 2005
                 10 [Order "Alteromonadales" Garrity et al. 2001 nom. ined.] see Order Alteromonadales Bowman and McMeekin 2005
                 12 [Order "Aeromonadales" Garrity and Holt 2001 nom. nud.] see Order Aeromonadales Martin-Carnahan and Joseph 2005
                 14 [Order "Pasteurellales"] see Order Pasteurellales Garrity et al. 2005