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 Chamaesiphonaceae Borzì (1878) see Family Chamaesiphonaceae Borzì 1878 Form genus Geitleribactron Komárek (1975) see Genus Geitleribactron Komárek 1975