[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Alphaproteobacteria Garrity et al. 2006
         Order Rhodobacterales Garrity et al. 2006
           Family Rhodobacteraceae Garrity et al. 2006
             Genus Rhodobacter Imhoff et al. 1984
               1 Rhodobacter capsulatus (Molisch 1907) Imhoff et al. 1984
               2 Rhodobacter azotoformans Hiraishi et al. 1997
               3 Rhodobacter blasticus corrig. (Eckersley and Dow 1981) Kawasaki et al. 1994
               4 Rhodobacter massiliensis Greub and Raoult 2006 see Haematobacter massiliensis (Greub and Raoult 2006) Helsel et al. 2007
               5 Rhodobacter sphaeroides (van Niel 1944) Imhoff et al. 1984
               6 Rhodobacter veldkampii Hansen and Imhoff 1985