[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 Bartonellaceae Gieszczykiewicz 1939 (Approved Lists 1980)
             Genus Bartonella Strong et al. 1915 (Approved Lists 1980)
               01 Bartonella bacilliformis (Strong et al. 1913) Strong et al. 1915 (Approved Lists 1980)
               02 Bartonella alsatica Heller et al. 1999
               03 Bartonella birtlesii Bermond et al. 2000
               04 Bartonella bovis Bermond et al. 2002
               05 Bartonella capreoli Bermond et al. 2002
               06 Bartonella chomelii Maillard et al. 2004
               07 Bartonella clarridgeiae Lawson and Collins 1996
               08 Bartonella doshiae Birtles et al. 1995
               09 Bartonella elizabethae (Daly et al. 1993) Brenner et al. 1993
               10 Bartonella grahamii Birtles et al. 1995
               11 Bartonella henselae (Regnery et al. 1992) Brenner et al. 1993
               12 Bartonella koehlerae Droz et al. 2000
               13 Bartonella peromysci (Ristic and Kreier 1984) Birtles et al. 1995
               14 Bartonella quintana (Schmincke 1917) Brenner et al. 1993
               15 Bartonella schoenbuchensis corrig. Dehio et al. 2001
               16 Bartonella talpae (Ristic and Kreier 1984) Birtles et al. 1995
               17 Bartonella taylorii Birtles et al. 1995
               18 Bartonella tribocorum Heller et al. 1998
               19 [Bartonella vinsonii] (Weiss and Dasch 1982) Brenner et al. 1993