[Class] Cyanobacteria "Stanier (1974)", nom. inval. - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
   Order Chroococcales Ardissone (1887) [paraphyletic] see Order Chroococcales corrig. Ardissone 1887
     Family Chroococcaceae Nägeli (1849) see Family Chroococcaceae Nägeli 1849
       Genus Cyanostylon L. Geitler (1928) see Genus Cyanostylon Geitler 1928