life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokarya see Domain Bacteria Woese et al. 1990
     Kingdom Bacteria (Cohn 1870) Cavalier-Smith 1983 - bacteria see Kingdom Bacteria Cavalier-Smith 2002
       Subkingdom Eubacteria Cavalier-Smith 1981 see Domain Bacteria Woese et al. 1990
         Division Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980) - gram-positive bacteria see Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
           Phylum Pirellulae Margulis and Schwartz 1998 see Phylum Planctomycetes Garrity and Holt 2001
             Genus Chlamydia Jones et al. 1945 (Approved Lists 1980)
               1 Chlamydia psittaci (Lillie 1930) Page 1968 (Approved Lists 1980) see Chlamydophila psittaci (Lillie 1930) Everett et al. 1999
               2 Chlamydia trachomatis (Busacca 1935) Rake 1957 (Approved Lists 1980)