oxyphototroph prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Class Chloroprokaryota Komárek & Golubić 1990 nom. nud. [monotypic] - chloroprokaryotes
     Order Prochlorales Lewin (1977), nom. inval. see Order Chroococcales corrig. Ardissone 1887
       1 Genus Prochloron Lewin (1977), nom. inval. see Genus Prochloron Lewin ex L.Hoffm. & Greuter (1993)
       2 Genus Prochlorococcum (sic) see Genus Prochlorococcus Chisholm et al. 1992 nom. inval.
       3 Genus Prochlorothrix Burger-Wiersma et al. 1989