oxyphototroph prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Class Cyanoprokaryota Komárek & Golubić 1990 nom. nud. - cyanoprokaryotes
     Order Chroococcales Ardissone (1887) see Order Chroococcales corrig. Ardissone 1887
       Family Hyellaceae Borzì (1914) see Family Hydrococcaceae Kützing (1843)
         Subfamily Podocapsoideae nom. illeg. see Family Hyellaceae Borzì (1914)
           1 Form genus Cyanosaccus K.J. Lukas & S. Golubić (1981) see Genus Cyanosaccus Lukas and Golubić 1981
           2 Form genus Ercegovicia G. De Toni (1936) see Genus Brachynema Ercegović 1931
           3 Form genus Podocapsa A. Ércegovic (1931), nom. illeg. see Genus Hydropodocapsa E.A. Molinari-Novoa & M.D. Guiry (2021)