[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021
       Class Alphaproteobacteria Garrity et al. 2006
         Order Rhizobiales Kuykendall 2006 see Order Hyphomicrobiales Douglas 1957 (Approved Lists 1980)
           Family Brucellaceae Breed et al. 1957 (Approved Lists 1980) see Family Bartonellaceae Gieszczykiewicz 1939 (Approved Lists 1980)
             Genus Ochrobactrum Holmes et al. 1988 see Genus Brucella Meyer and Shaw 1920 (Approved Lists 1980)
               1 Ochrobactrum anthropi Holmes et al. 1988
               2 Ochrobactrum gallinifaecis Kämpfer et al. 2003
               3 Ochrobactrum grignonense Lebuhn et al. 2000
               4 Ochrobactrum intermedium Velasco et al. 1998
               5 Ochrobactrum lupini Trujillo et al. 2006
               6 Ochrobactrum oryzae Tripathi et al. 2006
               7 Ochrobactrum tritici Lebuhn et al. 2000