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 Entophysalidaceae Geitler (1925) see Family Chroococcaceae Nägeli (1849)
         Subfamily Siphononematoideae [monotypic] see Family Entophysalidaceae Geitler (1925)
           Form genus Siphononema L. Geitler (1925) see Genus Siphononema Geitler 1925