Domain Bacteria Woese et al. 1990
   Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
     Class "Cyanobacteria" Cavalier-Smith, 2002
       Subsection I see Family Family 1.1 nom. inval.
         Form genus Prochloron (ex Lewin 1977) Florenzano et al. 1986 see Genus Prochloron R.A. Lewin 1977 [ICBN]