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 Chamaesiphonaceae Borzì (1878) see Family Chamaesiphonaceae Borzì 1878
         Form genus Clastidium O. Kirchner (1880) see Genus Clastidium Kirchner 1880