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 Hydrococcaceae Kützing (1843) see Family Hydrococcaceae Kützing 1843 Form genus Hyella Bornet & Flahault (1888) see Genus Hyella Bornet and Flahault 1888