Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum "Proteobacteria" Craig et al. 2010
               Phylum "Alphaproteobacteria" Garrity et al., 2006 [monotypic]
                 Class Alphaproteobacteriaᵀ Garrity et al. 2006
                   Order Rhizobiales Kuykendall 2006
                     Family Brucellaceae Breed et al. 1957 (Approved Lists 1980)
                       Genus Ochrobactrum Holmes et al. 1988
                         Ochrobactrum anthropi Holmes et al. 1988
                         Ochrobactrum ciceri Imran et al. 2010
                         Ochrobactrum cytisi Zurdo-Piñeiro et al. 2007
                         Ochrobactrum daejeonense Woo et al. 2011
                         Ochrobactrum gallinifaecis Kämpfer et al. 2003
                         Ochrobactrum grignonense Lebuhn et al. 2000
                         Ochrobactrum haematophilum Kämpfer et al. 2007
                         Ochrobactrum intermedium Velasco et al. 1998
                         Ochrobactrum lupini Trujillo et al. 2006
                         Ochrobactrum oryzae Tripathi et al. 2006
                         Ochrobactrum pecoris Kämpfer et al. 2011
                         Ochrobactrum pituitosum Huber et al. 2010
                         Ochrobactrum pseudintermedium Teyssier et al. 2007
                         Ochrobactrum pseudogrignonense Kämpfer et al. 2007
                         Ochrobactrum rhizosphaerae Kämpfer et al. 2008
                         Ochrobactrum thiophenivorans Kämpfer et al. 2008
                         Ochrobactrum tritici Lebuhn et al. 2000