oxyphototroph prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval. Class Cyanoprokaryota Komárek & Golubić 1990 nom. nud. - cyanoprokaryotes Order Stigonematales Geitler (1925) see Order Nostocales Borzì (1914) Family Fischerellaceae Anagnostidis & Komárek (1990) see Family Hapalosiphonaceae Elenkin (1917), nom. cons. Form genus Parthasarathiella N. Suba Raju (1962) see Genus Parthasarathiella Suba Raju 1962