[Class] Cyanobacteria "Stanier (1974)", nom. inval. - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
   Order Oscillatoriales Schaffner (1922) [paraphyletic] see Order Oscillatoriales Schaffner 1922
     Family Gomontiellaceae Elenkin ex Geitler (1942) see Family Gomontiellaceae Elenkin ex Geitler 1942
       Genus Katagnymene Lemmermann (1899) see Genus Katagnymene Lemmermann 1899