Procaryotic Genera
   Domain "Bacteria" Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 stat. inval. [monotypic] - cyanobacteria see Phylum Cyanobacteriota Oren et al. 2022
       Class "Cyanobacteria" "Stanier 1974" nom. inval. see Class Chroococcophyceae Hollerbach et al. 1953
         Subsection V [monotypic]
           Family I
             1 Form genus Chlorogloeopsis A.K. Mitra & D.C. Pandey (1967) see Genus Chlorogloeopsis Mitra and Pandey 1967
             2 Form genus Fischerella (Bornet & Flahault) Gomont (1895) see Genus Fischerella (Bornet and Flahault 1886) Gomont 1895
             3 Form genus Geitleria Friedmann (1955) see Genus Geitleria Friedmann 1955
             4 Form genus Iyengariella Desikachary (1953) see Genus Iyengariella Desikachary 1953
             5 Form genus Nostochopsis Wood ex Bornet & Flahault (1886) see Genus Nostochopsis Wood ex Bornet and Flahault 1886
             6 Form genus Stigonema C.Agardh ex Bornet & Flahault (1886) see Genus Stigonema Agardh ex Bornet and Flahault 1886