[Class] Cyanobacteria "Stanier (1974)", nom. inval. - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
   Order Synechococcales Hoffmann, Komárek & Kaštovský (2005), nom. inval. [paraphyletic] see Order Synechococcales Hoffmann et al. 2005 nom. nud.
     Family Chamaesiphonaceae Borzì (1878) see Family Chamaesiphonaceae Borzì 1878
       1 Genus Chamaesiphon A.Braun (1864) see Genus Chamaesiphon Braun 1864
       2 Genus Chamaesiphonopsis F.E. Fritsch (1929) see Genus Chamaesiphon Braun 1864
       3 Genus Clastidium O. Kirchner (1880) see Genus Clastidium Kirchner 1880
       4 Genus Cyanophanon L. Geitler (1955) see Genus Cyanophanon Geitler 1955
       5 Genus Geitleribactron Komárek (1975) see Genus Geitleribactron Komárek 1975