[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021
       Class Alphaproteobacteria Garrity et al. 2006
         Order Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980)
           Family Anaplasmataceae Philip 1957 (Approved Lists 1980) see Family Ehrlichiaceae Moshkovski 1945 (Approved Lists 1980)
             1 Genus Anaplasma Theiler 1910 (Approved Lists 1980)
             2 Genus Aegyptianella Carpano 1929 (Approved Lists 1980)
             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 Candidatus Neoehrlichia Kawahara et al. 2004
             5 Genus Neorickettsia Philip et al. 1953 (Approved Lists 1980)
             6 Genus Wolbachia Hertig 1936 (Approved Lists 1980)
             7 Genus Candidatus Xenohaliotis Friedman et al. 2000