prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Bacteroidetes" Krieg et al. 2012
       Class Cytophagia Nakagawa 2012 [monotypic]
         Order Cytophagales Leadbetter 1974 (Approved Lists 1980)
           Family Cytophagaceae Stanier 1940 (Approved Lists 1980)
             01 Genus Adhaeribacter Rickard et al. 2005
             02 Genus Arcicella Nikitin et al. 2004
             03 Genus Cytophaga Winogradsky 1929 (Approved Lists 1980)
             04 Genus Dyadobacter Chelius and Triplett 2000
             05 Genus Effluviibacter Suresh et al. 2006 see Genus Pontibacter Nedashkovskaya et al. 2005
             06 Genus Ekhidna Alain et al. 2010
             07 Genus Emticicia Saha and Chakrabarti 2006
             08 Genus Fibrella Filippini et al. 2011
             09 Genus Fibrisoma Filippini et al. 2011
             10 Genus Flectobacillus Larkin et al. 1977 (Approved Lists 1980)
             11 Genus Flexibacter Soriano 1945 (Approved Lists 1980)
             12 Genus Fluviimonas Sheu et al. 2013
             13 Genus Huanghella Jiang et al. 2013
             14 Genus Hymenobacter Hirsch et al. 1999
             15 Genus Lacihabitans Joung et al. 2014
             16 Genus Larkinella Vancanneyt et al. 2006
             17 Genus Leadbetterella Weon et al. 2005
             18 Genus Litoribacter Tian et al. 2010
             19 Genus Meniscus Irgens 1977 (Approved Lists 1980)
             20 Genus Microscilla Pringsheim 1951 (Approved Lists 1980)
             21 Genus Persicitalea Yoon et al. 2007
             22 Genus Pontibacter Nedashkovskaya et al. 2005
             23 Genus Pseudarcicella Kämpfer et al. 2012
             24 Genus Rhodocytophaga Anandham et al. 2010
             25 Genus Rhodonellum Schmidt et al. 2006
             26 Genus Rudanella Weon et al. 2008
             27 Genus Rufibacter Abaydulla et al. 2014
             28 Genus Runella Larkin and Williams 1978 (Approved Lists 1980)
             29 Genus Siphonobacter Táncsics et al. 2010
             30 Genus Spirosoma Migula 1894 (Approved Lists 1980)
             31 Genus Sporocytophaga Stanier 1940 (Approved Lists 1980)