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
       01 Family "Cyanobacteriaceae" Hoffmann, Komárek & Kaštovský (2005), nom. inval. see Family Cyanobacteriaceae Komárek, J. Kaštovský, J. Mareš & J.R.Johans. (2014), nom. inval.
       02 Family Microcystaceae Elenkin (1933) see Family Microcystaceae Elenkin 1933
       03 Family Gomphosphaeriaceae Elenkin (1933) see Family Gomphosphaeriaceae Elenkin 1933
       04 Family Prochloraceae Lewin (1977), nom. inval. [monotypic] see Family Prochloraceae Lewin ex Florenzano, Balloni & Materassi (1986), nom. inval.
       05 Family Chroococcaceae Nägeli (1849) see Family Chroococcaceae Nägeli 1849
       06 Family Entophysalidaceae Geitler (1925) see Family Chroococcaceae Nägeli (1849)
       07 Family Stichosiphonaceae Hoffmann, Komárek & Kaštovský (2005), nom. nud. see Family Stichosiphonaceae Hoffmann et al. 2005 nom. nud.
       08 Family Dermocarpellaceae F. Ginsburg-Ardré ex T. Christensen (1978) see Family Hydrococcaceae Kützing 1843
       09 Family Xenococcaceae Ercegović (1932) see Family Hydrococcaceae Kützing 1843
       10 Family Hydrococcaceae Kützing (1843) see Family Hydrococcaceae Kützing 1843
       11 Family "Spirulinaceae" Hoffmann, Komárek & Kaštovský (2005), nom. inval. see Family Spirulinaceae Hoffmann, Komárek & Kaštovský (2014)