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 Anaplasmataceae Philip 1957 (Approved Lists 1980)
                       1 Genus Anaplasmaᵀ Theiler 1910 (Approved Lists 1980)
                       2 Genus Aegyptianella Carpano 1929 (Approved Lists 1980) [monotypic]
                       3 Genus Ehrlichia Moshkovski 1945 (Approved Lists 1980)
                       3.0 [Genus Cowdria Moshkovski 1947 (Approved Lists 1980)] see Genus Ehrlichia Moshkovski 1945 (Approved Lists 1980)
                       4 Genus Neorickettsia Philip et al. 1953 (Approved Lists 1980)
                       5 Genus Wolbachia Hertig 1936 (Approved Lists 1980)
                       6 Candidatus "Neoehrlichia"
                       7 Candidatus "Xenohaliotis" [monotypic]