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 Division Posibacteria Cavalier-Smith 2002 Subdivision Actinobacteria Cavalier-Smith 2002 see Phylum Actinobacteria Garrity and Holt 2001 Class Arabobacteria Cavalier-Smith 2002 Order Actinoplanales Cavalier-Smith 2002 see Order Actinomycetales Buchanan 1917 (Approved Lists 1980)