Kingdom Bacteria Cavalier-Smith 2002 stat. inval. [paraphyletic?] - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Subkingdom Negibacteria Cavalier-Smith 2002 stat. inval. [paraphyletic?] - negibacteria see Domain Bacteria Woese et al. 1990 stat. inval.
     Infrakingdom Glycobacteria Cavalier-Smith 2002 stat. inval. see Domain Bacteria Woese et al. 1990 stat. inval.
       Superdivision Exoflagellata Cavalier-Smith 2002
         Division Proteobacteria Cavalier-Smith 2002 stat. inval.
           Subdivision Thiobacteria Cavalier-Smith 2002
             1 Class Deltabacteria Cavalier-Smith 2002 nom. rej. see Class Deltaproteobacteria Kuever et al. 2006
             2 Class Epsilobacteria Cavalier-Smith 2002 nom. illeg., nom. rej.
             3 Genus Thermodesulfobacterium Zeikus et al. 1995, incertae sedis