Procaryotic Genera Domain "Bacteria" Woese et al. 1990 Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 [monotypic] - cyanobacteria Class "Cyanobacteria" Cavalier-Smith, 2002 Subsection V [monotypic] Family I Form genus Iyengariella Desikachary 1953 [ICBN]