[Class] Cyanobacteria "Stanier (1974)", nom. inval. - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
   1 Order Gloeobacterales Caval.-Sm. (2002), nom. inval. [monotypic] see Order Gloeobacterales Cavalier-Smith 2002 nom. inval., nom. rej.
   2 Order Synechococcales Hoffmann, Komárek & Kaštovský (2005), nom. inval. [paraphyletic] see Order Synechococcales Hoffmann et al. 2005 nom. nud.
   2.n Order Oscillatoriales Schaffner (1922) [paraphyletic] see Order Oscillatoriales Schaffner 1922
   2.n.n.1.1 Order Chroococcales Ardissone (1887) [paraphyletic] see Order Chroococcales corrig. Ardissone 1887
   2.n.n.1.1.n Order Pleurocapsales Geitler (1925) see Order Chroococcales Ardissone (1887)
   2.n.n.1.2 Order Spirulinales Komárek, J. Kaštovský, J. Mareš & J.R.Johans. (2014) [monotypic] see Order Spirulinales Komárek et al. 2014
   2.n.n.2.1 Order Chroococcidiopsidales Komárek, J. Kaštovský, J. Mareš & J.R.Johans. (2014) [monotypic] see Order Chroococcidiopsidales Komárek et al. 2014
   2.n.n.2.2 Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914