procaryotes
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum Proteobacteria Garrity and Holt 2001 nom. nud. see Phylum Proteobacteria Garrity et al. 2005 stat. inval.
       Class "Alphaproteobacteria" "Garrity and Holt 2001" nom. nud. see Class Alphaproteobacteria Garrity et al. 2006
         Order "Rhodobacterales" "Garrity and Holt 2001" nom. nud. [monotypic] see Order Rhodobacterales Garrity et al. 2006
           Family "Rhodobacteraceae" "Garrity and Holt 2001" nom. nud. see Family Rhodobacteraceae Garrity et al. 2006 nom. illeg.
             01 Genus Rhodobacter Imhoff et al. 1984
             02 Genus Ahrensia Uchino et al. 1999
             03 Genus Amaricoccus Maszenan et al. 1997
             04 Genus Antarctobacter Labrenz et al. 1998
             05 Genus Gemmobacter Rothe et al. 1988
             06 Genus Hirschia Schlesner et al. 1990
             07 Genus Hyphomonas (ex Pongratz 1957) Moore et al. 1984
             08 Genus Maricaulis Abraham et al. 1999
             09 Genus Octadecabacter Gosink et al. 1998
             10 Genus Paracoccus Davis 1969 (Approved Lists 1980)
             11 Genus Rhodovulum Hiraishi and Ueda 1994
             12 Genus Roseivivax Suzuki et al. 1999
             13 Genus Roseobacter Shiba 1991
             14 Genus Roseovarius Labrenz et al. 1999
             15 Genus Rubrimonas Suzuki et al. 1999
             16 Genus Ruegeria Uchino et al. 1999
             17 Genus Sagittula Gonzalez et al. 1997
             18 Genus Staleya Labrenz et al. 2000 see Genus Sulfitobacter Sorokin 1996
             19 Genus Stappia Uchino et al. 1999
             20 Genus Sulfitobacter Sorokin 1996