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
       Division Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 see Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002
         Subdivision Phycobacteria Cavalier-Smith 2002 see Subphylum Phycobacteria Cavalier-Smith 2002
           Class Chroobacteria Cavalier-Smith 2002 see Subclass Oscillatoriophycideae
             1 Order Chroococcales Cavalier-Smith 2002 see Order Chroococcales Wettst. (1924)
             2 Order Pleurocapsales Cavalier-Smith 2002 see Order Chroococcales Cavalier-Smith 2002
             3 Order Oscillatoriales Cavalier-Smith 2002 nom. rej. see Order Oscillatoriales Elenkin (1934)