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 Geobacteria Cavalier-Smith 2002 1 Class Ferrobacteria Cavalier-Smith 2002 2 Class Acidobacteria Cavalier-Smith 2002