[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 "Chlamydiae" Garrity and Holt 2001 nom. inval. see Phylum Chlamydiae Garrity and Holt 2012 stat. inval.
       Class "Chlamydiae" "Cavalier-Smith 1998" nom. nud. see Class Chlamydiae Cavalier-Smith 2002 nom. rej.
         Order Chlamydiales Storz and Page 1971 (Approved Lists 1980)
           Family Simkaniaceae Everett et al. 1999
             1 Genus Simkania Everett et al. 1999
             2 Genus Candidatus Rhabdochlamydia Kostanjšek et al. 2004