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 Podocapsa A. Ércegovic (1931), nom. illeg. see Genus Hydropodocapsa E.A. Molinari-Novoa & M.D. Guiry (2021)