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 Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980)
                     Family Rickettsiaceae Pinkerton 1936 (Approved Lists 1980)
                       Genus Rickettsiaᵀ da Rocha-Lima 1916 (Approved Lists 1980)
                         [AB bacterium]
                         [Astrakhan fever rickettsia]
                         [Israeli tick typhus rickettsia]
                         ["Rickettsia amblyommii"]
                         ["Rickettsia felis" Higgins et al. 1996] see Rickettsia felis Bouyer et al. 2001
                         ["Rickettsia mongolotimonae"]
                         [Rickettsia prowazeki] see Rickettsia prowazekii da Rocha-Lima 1916 (Approved Lists 1980)
                         ["Rickettsia psittaci" Lillie 1930] see Chlamydophila psittaci (Lillie 1930) Everett et al. 1999
                         [Rickettsia sennetsu Misao and Kobayashi 1956 (Approved Lists 1980)] see Neorickettsia sennetsu (Misao and Kobayashi 1956) Dumler et al. 2001
                         [Rickettsia tsutsugamushi (Hayashi 1920) Ogata 1931 (Approved Lists 1980)] see Orientia tsutsugamushi (Hayashi 1920) Tamura et al. 1995
                         ["Rickettsia typhi" do Amaral and Monteiro 1933]
                         [strain S]
                         [Thai tick typhus rickettsia]
                         01 Rickettsia aeschlimannii Beati et al. 1997
                         02 Rickettsia africae Kelly et al. 1996
                         03 Rickettsia akari Huebner et al. 1946 (Approved Lists 1980)
                         04 Rickettsia asiatica Fujita et al. 2006
                         05 Rickettsia australis Philip 1950 (Approved Lists 1980)
                         06 Rickettsia bellii Philip et al. 1983
                         07 Rickettsia canadensis corrig. McKiel et al. 1967 (Approved Lists 1980)
                         08 Rickettsia conorii Brumpt 1932 (Approved Lists 1980)
                         09 Rickettsia felis Bouyer et al. 2001
                         10 Rickettsia heilongjiangensis Fournier et al. 2006
                         11 Rickettsia helvetica Beati et al. 1993
                         12 Rickettsia honei Stenos et al. 1998
                         13 Rickettsia japonica Uchida et al. 1992
                         14 Rickettsia massiliae Beati and Raoult 1993
                         15 Rickettsia montanensis corrig. (ex Lackman et al. 1965) Weiss and Moulder 1984
                         16 Rickettsia parkeri Lackman et al. 1965 (Approved Lists 1980)
                         17 Rickettsia peacockii Niebylski et al. 1997
                         18 Rickettsia prowazekiiᵀ da Rocha-Lima 1916 (Approved Lists 1980)
                         19 Rickettsia raoultii Mediannikov et al. 2008
                         20 Rickettsia rhipicephali (ex Burgdorfer et al. 1978) Weiss and Moulder 1988
                         21 Rickettsia rickettsii (Wolbach 1919) Brumpt 1922 (Approved Lists 1980)
                         22 Rickettsia sibirica Zdrodovskii 1948 (Approved Lists 1980)
                         23 Rickettsia slovaca Sekeyová et al. 1998
                         24 Rickettsia tamurae Fournier et al. 2006
                         25 Rickettsia typhi (Wolbach and Todd 1920) Philip 1943 (Approved Lists 1980)