life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Status: extant
   Superkingdom Prokarya see Domain Bacteria Woese et al. 1990
  Status: extant
     Kingdom Bacteria (Cohn 1870) Cavalier-Smith 1983 - bacteria see Kingdom Bacteria Cavalier-Smith 2002
    Status: extant
       Subkingdom Eubacteria Cavalier-Smith 1981 see Domain Bacteria Woese et al. 1990
      Status: extant
         Division Gracilicutes Gibbons and Murray 1978 (Approved Lists 1980) see Phylum Gracilicutes
        Status: extant
           Phylum Proteobacteria Garrity and Holt 2001 see Phylum Proteobacteria Garrity et al. 2005
          Status: extant
             "Delta Group" see Class Deltaproteobacteria Garrity et al. 2001 nom. ined.
            Status: extant
               2 Genus Bdellovibrio Stolp and Starr 1963 (Approved Lists 1980)
              Status: extant
               3 Genus Desulfotomaculatum see Genus Desulfotomaculum Campbell and Postgate 1965 (Approved Lists 1980)
              Status: extant
               4 Genus Desulfovibrio Kluyver and van Niel 1936 (Approved Lists 1980)
              Status: extant
               5 Genus Desulfuromonas Pfennig and Biebl 1977 (Approved Lists 1980)
              Status: extant
               7 "Myxobacteria" see Order Myxococcales Tchan et al. 1948 (Approved Lists 1980)
              Status: extant