organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Kingdom Eubacteria Woese and Fox 1977 see Domain Bacteria Woese et al. 1990
       Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
         1 Order Chroococcales Cavalier-Smith 2002 see Order Chroococcales Wettst. (1924)
         2 Order Oscillatoriales Cavalier-Smith 2002 nom. rej. see Order Oscillatoriales Elenkin (1934)
         3 Order Pleurocapsales Cavalier-Smith 2002 see Order Chroococcales Cavalier-Smith 2002