Class Cyanoprokaryota Komárek & Golubić 1990 nom. nud. - cyanoprokaryotes Subclass Oscillatoriophycidae Hoffmann, Komárek & Kaštovský (2005), nom. inval. Order Chroococcales Ardissone (1887) see Order Chroococcales corrig. Ardissone 1887 Family Entophysalidaceae Geitler (1925) see Family Chroococcaceae Nägeli (1849) Form genus Hormathonema A. Ercegović (1929) see Genus Hormathonema Ercegović 1929