Procaryotic Genera Domain "Bacteria" Woese et al. 1990 Phylum Proteobacteria Garrity and Holt 2001 see Phylum Proteobacteria Garrity et al. 2005 Class "Alphaproteobacteria" Garrity and Holt 2001 nom. nud. see Class Alphaproteobacteria Garrity et al. 2006 Order Rhodospirillales Pfennig and TrĂ¼per 1971 (Approved Lists 1980) Family Acetobacteraceae (ex Henrici 1939) Gillis and De Ley 1980 Genus Rhodopila Imhoff et al. 1984