prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Cyanobacteria" (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
       Order Chroococcales Cavalier-Smith 2002 [monotypic] see Order Chroococcales Wettst. (1924)
         1 Genus Rubidibacter Choi et al. 2008