organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990 stat. inval.
     Phylum Omnibacteria Margulis and Schwartz 1982 nom. ined. see Domain Bacteria Woese et al. 1990 stat. inval.
       Class "Rickettsias and Chlamydias"
         1 Genus Chlamydia Jones et al. 1945 (Approved Lists 1980)
         2 Genus Rickettsia da Rocha-Lima 1916 (Approved Lists 1980) nom. cons.