prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Cyanobacteria" (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
       1 Order Chroococcales Cavalier-Smith 2002 [monotypic] see Order Chroococcales Wettst. (1924)
       2 Order Oscillatoriales Cavalier-Smith 2002 nom. rej. see Order Oscillatoriales Elenkin (1934)
       3 Order Prochlorales (ex Lewin 1977) Florenzano et al. 1986 see Order Chroococcales Cavalier-Smith 2002