Kingdom Bacteria Cavalier-Smith 2002 - bacteria see Domain Bacteria Woese et al. 1990 Subkingdom Negibacteria Cavalier-Smith 2002 - negibacteria see Domain Bacteria Woese et al. 1990 Infrakingdom Glycobacteria Cavalier-Smith 2002 see Domain Bacteria Woese et al. 1990 Superdivision Exoflagellata Cavalier-Smith 2002 Division Proteobacteria Cavalier-Smith 2002 Subdivision Thiobacteria Cavalier-Smith 2002 Class Deltabacteria Cavalier-Smith 2002 see Class Deltaproteobacteria Kuever et al. 2006