[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 Rhizobiales Kuykendall 2006
           Family Brucellaceae Breed et al. 1957 (Approved Lists 1980)
             Genus Ochrobactrum Holmes et al. 1988
               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