prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Domain "Bacteria" Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Bacteroidetes" Krieg et al. 2012 stat. inval. see Phylum Bacteroidota Krieg et al. 2021
       Class Cytophagia Nakagawa 2012 [monotypic]
         Order Cytophagales Leadbetter 1974 (Approved Lists 1980)
           1 Family Catalimonadaceae (sic) Choi et al. 2013 [monotypic] see Family Catalinimonadaceae corrig. Choi et al. 2013
           2 Family Cyclobacteriaceae Nedashkovskaya and Ludwig 2012
           3 Family Cytophagaceae Stanier 1940 (Approved Lists 1980)
           4 Family Flammeovirgaceae Yoon et al. 2011
           5 Family Mooreiaceae Choi et al. 2013 [monotypic]
           6 Family Rhodothermaceae Ludwig et al. 2012
           7 Genus Chryseolinea Kim et al. 2013, incertae sedis
           8 Genus Luteivirga Haber et al. 2013, incertae sedis
           9 Genus Ohtaekwangia Yoon et al. 2011, incertae sedis