oxyphototroph prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Class Cyanoprokaryota Komárek & Golubić 1990 nom. nud. - cyanoprokaryotes
     Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914
       Family Nostocaceae Eichler (1886) see Family Nostocaceae Eichler 1886
         Subfamily Nostocoideae see Family Nostocaceae Eichler (1886)
           Genus Nodularia Mert. ex Bornet & Flahault (1886), nom. cons. see Genus Nodularia Mertens ex Bornet and Flahault 1886 nom. cons.