life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokarya see Domain Bacteria Woese et al. 1990
     Kingdom Bacteria (Cohn 1870) Cavalier-Smith 1983 - bacteria see Kingdom Bacteria Cavalier-Smith 2002
       Subkingdom Eubacteria Cavalier-Smith 1981 see Domain Bacteria Woese et al. 1990
         Division Gracilicutes Gibbons and Murray 1978 (Approved Lists 1980) see Phylum Gracilicutes
           Phylum Proteobacteria Garrity and Holt 2001 see Phylum Proteobacteria Garrity et al. 2005
             "Gamma Group" see Class Gammaproteobacteria Garrity et al. 2005
               "Enterics" see Class Gammaproteobacteria nom. inval.
                 01 Genus Escherichia Castellani and Chalmers 1919 (Approved Lists 1980)
                 02 Genus Edwardsiella Ewing and McWhorter 1965 (Approved Lists 1980)
                 03 Genus Citrobacter Werkman and Gillen 1932 (Approved Lists 1980)
                 04 Genus Salmonella Lignieres 1900 (Approved Lists 1980)
                 05 Genus Shigella Castellani and Chalmers 1919 (Approved Lists 1980)
                 06 Genus Klebsiella Trevisan 1885 (Approved Lists 1980)
                 07 Genus Enterobacter Hormaeche and Edwards 1960 (Approved Lists 1980)
                 08 Genus Serratia Bizio 1823 (Approved Lists 1980)
                 09 Genus Proteus Hauser 1885 (Approved Lists 1980)
                 10 Genus Yersinia van Loghem 1944 (Approved Lists 1980)
                 11 Genus Erwinia Winslow et al. 1920 (Approved Lists 1980)
                 12 "Vibrios" see Order Vibrionales Garrity & Holt, 2001