Kingdom Bacteria Cavalier-Smith 2002 - bacteria see Domain Bacteria Woese et al. 1990 Subkingdom Unibacteria Cavalier-Smith 2002 see Domain Bacteria Woese et al. 1990 1 Division Posibacteria Cavalier-Smith 2002 2 Division Archaebacteria Cavalier-Smith 2002 see Domain Archaea Woese et al. 1990