1. Subfamily Euclymeninae Arwidsson, 1906
   1. Genus Abyssoclymene Hartman, 1967
   2. Genus Aclymene Buzhinskaja, 1995
   3. Genus Axiothella Verrill, 1900
   4. Genus Caesicirrus Arwidsson, 1911
   5. Genus Clymenella Verrill, 1873
   6. Genus Euclymene Verrill, 1900
   7. Genus Heteroclymene Arwidsson, 1906
   8. Genus Isocirrus Arwidsson, 1906
   9. Genus Johnstonia Quatrefages, 1866
   10. Tribe Leiochonini Arwidsson, 1906
       1. Genus Clymenura Verrill, 1900
       2. Genus Leiochone Grube, 1868
       3. Genus Leiocephalus Quatrefages, 1866 accepted as Leiochone Grube, 1868 (junior homonym, subjective synonym [in part])
   11. Genus Macroclymene Verrill, 1900
   12. Genus Maldanella McIntosh, 1885
   13. Genus Microclymene Arwidsson, 1906
   14. Genus Petaloclymene Augener, 1918
   15. Genus Praxillella Verrill, 1881
   16. Genus Axiothea Malmgren, 1865 accepted as Axiothella Verrill, 1900 (unaccepted > junior homonym, replaced junior homonym)
   17. Genus Clymenoida Williams, 1852 accepted as Clymene Lamarck, 1818 (indeterminable, but likely a lapsus for Clymene)
   18. Genus Eupraxillella Hartmann-Schröder & Rosenfeldt, 1989 accepted as Praxillella Verrill, 1881 (unaccepted > junior subjective synonym)
   19. Genus Jonhstonia [auct. misspelling for Johnstonia] accepted as Johnstonia Quatrefages, 1866 (printer error misspelling)
   20. Genus Macroclymenella Augener, 1926 accepted as Clymenella Verrill, 1873 (unaccepted > junior subjective synonym)
   21. Genus Praxilla Malmgren, 1865 accepted as Praxillella Verrill, 1881 (replaced junior homonym)
   22. Genus Pseudoclymene Arwidsson, 1906 accepted as Praxillella Verrill, 1881 (unaccepted > junior subjective synonym)
   23. Genus Clymene Lamarck, 1818 (uncertain > nomen dubium, confused, stated as indeterminable, unused after Verrill replaced the name with Euclymene)
   24. Genus Petaloclymene Green, 1997 (uncertain > nomen dubium, unreplaced junior homonym to Petaloclymene Augener, 1918)
2. Genus Gravierella Fauvel, 1919
3. Genus Iphianissa Kinberg, 1866
4. Subfamily Lumbriclymeninae Arwidsson, 1906
   1. Genus Clymenopsis Verrill, 1900
   2. Genus Lumbriclymene Sars, 1872
   3. Genus Lumbriclymenella Arwidsson, 1911
   4. Genus Nicomachella Ehlers, 1887
   5. Genus Praxillura Verrill, 1879
5. Subfamily Maldaninae Malmgren, 1867
   1. Genus Asychis Kinberg, 1867
   2. Genus Bathyasychis Detinova, 1982
   3. Genus Chirimia Light, 1991
   4. Genus Maldane Grube, 1860
   5. Genus Metasychis Light, 1991
   6. Genus Paramaldane Wang & Li, 2016
   7. Genus Sabaco Kinberg, 1866
   8. Genus Branchioasychis Monro, 1939 accepted as Sabaco Kinberg, 1866 (subjective synonym)
   9. Genus Chrysothemis Kinberg, 1866 accepted as Chirimia Light, 1991 (replaced junior homonym)
   10. Genus Heteromaldane Ehlers, 1908 accepted as Maldane Grube, 1860 (subjective synonym)
   11. Genus Maldanopsis Verrill, 1900 accepted as Sabaco Kinberg, 1866 (subjective synonym)
   12. Genus Sonatsa Chamberlin, 1919 accepted as Maldane Grube, 1860 (subjective synonym)
6. Genus Mandrocles Kinberg, 1866
7. Genus Mylitta Kinberg, 1866
8. Genus Neco Kinberg, 1866
9. Subfamily Nicomachinae Arwidsson, 1906
   1. Genus Micromaldane Monro, 1939
   2. Genus Nicomache Malmgren, 1865
   3. Genus Petaloproctus Quatrefages, 1866
   4. Genus Nichomache [auctt.] accepted as Nicomache Malmgren, 1865 (Misspelling)
10. Subfamily Notoproctinae Detinova, 1985
    1. Genus Notoproctus Arwidsson, 1906
    2. Genus Clymaldane Mesnil & Fauvel, 1939 accepted as Notoproctus Arwidsson, 1906 (subjective synonym)
11. Genus Proclymene Arwidsson, 1906
12. Subfamily Rhodininae Arwidsson, 1906
    1. Genus Boguea Hartman, 1945
    2. Genus Boguella Hartman & Fauchald, 1971
    3. Genus Rhodine Malmgren, 1865
13. Genus Tubifex Lamarck, 1816 ['Tubifex' taxa now in Polychaeta]
14. Subfamily Bogueinae Hartman & Fauchald, 1971 accepted as Rhodininae Arwidsson, 1906 (unaccepted > junior subjective synonym)
15. Subfamily Clymenurinae Imajima & Shiraki, 1982 accepted as Leiochonini Arwidsson, 1906 (synonym at both subfamily and tribe ranks)
16. Subfamily Heteromaldaninae Chamberlin, 1919 accepted as Maldaninae Malmgren, 1867 (unaccepted > junior subjective synonym, subjective synonym)
17. Genus Paraxiothea Webster, 1879 accepted as Clymenella Verrill, 1873 (subjective synonym)
18. Subfamily Sonatsinae Chamberlin, 1919 accepted as Maldaninae Malmgren, 1867 (unaccepted > junior subjective synonym, subjective synonym)

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