[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)
             Genus Anaplasma Theiler 1910 (Approved Lists 1980)
               Anaplasma caudatum (ex Kreier and Ristic 1963) Ristic and Kreier 1984