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
     Phylum Omnibacteria Margulis and Schwartz 1982 see Domain Bacteria Woese et al. 1990
       Class "Rickettsias and Chlamydias"
         1 Genus Chlamydia Jones et al. 1945 (Approved Lists 1980)
         2 Genus Rickettsia da Rocha-Lima 1916 (Approved Lists 1980)