procaryotes
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum Cyanobacteria "Stanier (1974)" [monotypic] see Phylum Cyanobacteriota Oren et al. 2022
       Class "Cyanobacteria" "Stanier (1974)", nom. inval. [monotypic] - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
         Subsection IV
           Subgroup I see Family I
             Form genus Cyanospira G. Florenz., Sili, Pelosi & Vincenzini (1985), nom. nud. see Genus Cyanospira G. Florenz., Sili, Pelosi & Vincenzini (2015), nom. illeg.