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
             Form genus Fischerella (Bornet & Flahault) Gomont (1895) see Genus Fischerella (Bornet and Flahault 1886) Gomont 1895