Anoxyphotobacteria (Gibbons and Murray 1978) Murray 1988 Rhodospirillales Pfennig and Trüper 1971 (Approved Lists 1980) emend. Hördt et al. 2020 Universal Root Woese et al. 1990 Bacteria (None 2015) Woese et al. 1990 Incertae sedis 212 Murray 1984 Anoxyphotobacteria (Gibbons and Murray 1978) Murray 1988 Incertae sedis 212 Murray 1984 Anoxyphotobacteriae Gibbons and Murray 1978 (Approved Lists 1980) Murray R.G.E. Holt J.G. The Higher Taxa, or, a Place for Everything...? 1984 1 1 31 34 Bergey's Manual of Systematic Bacteriology The Williams and Wilkins Co. Baltimore