Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] 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 Bartonellaceae Gieszczykiewicz 1939 (Approved Lists 1980) [monotypic]
                       Genus Bartonellaᵀ Strong et al. 1915 (Approved Lists 1980)
                         Bartonella vinsonii (Weiss and Dasch 1982) Brenner et al. 1993
                           Bartonella vinsonii subsp. vinsoniiᵀ (Weiss and Dasch 1982) Kordick et al. 1996