Kingdom Bacteria Cavalier-Smith 2002 stat. inval. [paraphyletic?] - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   1 Subkingdom Negibacteria Cavalier-Smith 2002 stat. inval. [paraphyletic?] - negibacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   2 Subkingdom Unibacteria Cavalier-Smith 2002 [paraphyletic?] see Domain Bacteria Woese et al. 1990 stat. inval.