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 "Rhizobiales" see Order Rhizobiales Kuykendall 2006 Family "Phyllobacteriaceae" see Family Phyllobacteriaceae Mergaert and Swings 2006 Genus Aminobacter Urakami et al. 1992 Genus Aquamicrobium Bambauer et al. 1998 Genus Defluvibacter Fritsche et al. 1999 see Genus Aquamicrobium Bambauer et al. 1998 Genus Mesorhizobium Jarvis et al. 1997 Genus Pseudaminobacter Kämpfer et al. 1999 1 Genus Phyllobacterium (ex Knösel 1962) Knösel 1984