[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 Chlamydiaceae Rake 1957 (Approved Lists 1980)
             Genus Chlamydophila Everett et al. 1999 see Genus Chlamydia Jones et al. 1945 (Approved Lists 1980)
               Chlamydophila pneumoniae (Grayston et al. 1989) Everett et al. 1999