Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           [Domain "Bacteria" Woese et al. 1990 stat. inval. [paraphyletic?]] see Domain Bacteria Woese et al. 2024
             [Phylum "Proteobacteria" Garrity and Holt 2001 nom. nud.] see Phylum Proteobacteria Garrity et al. 2005 stat. inval.
               1.1 [Class "Alphaproteobacteria" "Garrity and Holt 2001" nom. nud.] see Class Alphaproteobacteria Garrity et al. 2006
               1.1.0 ["Alpha Group"] see Class Alphaproteobacteria Garrity et al. 2006
               1.1.0 [Class "Alphabacteria" Cavalier-Smith 1992] see Infraphylum Alphabacteria (Cavalier-Smith 1992) Cavalier-Smith 1998
               1.2.1 [Class "Betaproteobacteria" "Garrity and Holt 2001" nom. nud.] see Class Betaproteobacteria Garrity et al. 2006
               1.2.1.0 ["Beta Group"] see Class Betaproteobacteria Garrity et al. 2006
               1.2.2 [Class "Gammaproteobacteria" "Garrity and Holt 2001" nom. nud.] see Class Gammaproteobacteria Garrity et al. 2005
               1.2.2.0 ["Gamma Group"] see Class Gammaproteobacteria Garrity et al. 2005
               1.n [Subphylum Rhodobacteria Cavalier-Smith 1998] see Phylum Proteobacteria Garrity and Holt 2001 nom. nud.
               2.1 [Class "Deltaproteobacteria" "Garrity and Holt 2001" nom. nud.] see Class Deltaproteobacteria Kuever et al. 2006
               2.1.0 ["Delta Group"] see Class Deltaproteobacteria "Garrity and Holt 2001" nom. nud.
               2.2 [Class "Epsilonproteobacteria" "Garrity and Holt 2001" nom. nud.] see Class Epsilonproteobacteria Garrity et al. 2006
               2.n [Subphylum Thiobacteria Cavalier-Smith 1998] see Phylum Proteobacteria Garrity et al. 2005 stat. inval.