Class Cyanoprokaryota Komárek & Golubić 1990 nom. nud. - cyanoprokaryotes Subclass Synechococcophycidae Hoffmann, Komárek & Kaštovský (2005), nom. inval. Order "Synechococcales" Hoffmann, Komárek & Kaštovský (2005), nom. inval. see Order Synechococcales Hoffmann et al. 2005 nom. nud. Family Merismopediaceae Elenkin (1933) see Family Microcystaceae Elenkin 1933 Form genus Cyanotetras F. Hindák (1988) see Genus Cyanotetras Hindák 1988