1. Genus Eucrate De Haan, 1835
   1. Species Eucrate alcocki Serène in Serène & Lohavanijaya, 1973
   2. Species Eucrate crenata (De Haan, 1835)
   3. Species Eucrate dorsalis (White, 1849)
   4. Species Eucrate formosensis Sakai, 1974
   5. Species Eucrate indica Castro & Ng, 2010
   6. Species Eucrate sexdentata Haswell, 1881
   7. Species Eucrate solaris Yang & Sun, 1979
   8. Species Eucrate tripunctata Campbell, 1969
   9. Species Eucrate affinis Haswell, 1881 accepted as Trissoplax dentata (Stimpson, 1858) (unaccepted > junior subjective synonym)
   10. Species Eucrate alcocki Serène, 1971 accepted as Eucrate alcocki Serène in Serène & Lohavanijaya, 1973 (unaccepted > nomen nudum)
   11. Species Eucrate californiensis Lockington, 1877 accepted as Malacoplax californiensis (Lockington, 1877) (unaccepted > superseded combination)
   12. Species Eucrate costata Yang & Sun, 1979 accepted as Trissoplax dentata (Stimpson, 1858) (unaccepted > junior subjective synonym)
   13. Species Eucrate crassimana Dana, 1851 accepted as Eucratopsis crassimanus (Dana, 1851) (unaccepted > superseded combination)
   14. Species Eucrate hamiltoni McCulloch, 1908 accepted as Eucrate dorsalis (White, 1849) (unaccepted > junior subjective synonym)
   15. Species Eucrate haswelli Campbell, 1969 accepted as Trissoplax dentata (Stimpson, 1858) (unaccepted > junior subjective synonym)
   16. Species Eucrate laevimanus (Lucas in Jacquinot & Lucas, 1853) accepted as Eucrate dorsalis (White, 1849) (unaccepted > superseded combination)
   17. Species Eucrate laevis (Borradaile, 1902) accepted as Platyozius laevis (Borradaile, 1902) (unaccepted > superseded combination)
   18. Species Eucrate maculata Yang & Sun, 1979 accepted as Eucrate alcocki Serène in Serène & Lohavanijaya, 1973 (unaccepted > junior subjective synonym)
   19. Species Eucrate sexdentatus Haswell, 1881 accepted as Eucrate sexdentata Haswell, 1881 (unaccepted > incorrect grammatical agreement of specific epithet)
   20. Species Eucrate sulcatifrons (Stimpson, 1858) accepted as Eucrate crenata (De Haan, 1835) (unaccepted > superseded combination)
2. Genus Euryplax Stimpson, 1859
   1. Species Euryplax nitida Stimpson, 1859
   2. Species Euryplax polita Smith, 1870
   3. Species Euryplax bevisi Stebbing, 1921 accepted as Thalamita bevisi (Stebbing, 1921) (unaccepted > superseded combination)
   4. Species Euryplax nitidus Stimpson, 1859 accepted as Euryplax nitida Stimpson, 1859 (unaccepted > incorrect grammatical agreement of specific epithet)
   5. Species Euryplax politus Smith, 1870 accepted as Euryplax polita Smith, 1870 (unaccepted > incorrect grammatical agreement of specific epithet)
3. Genus Frevillea A. Milne-Edwards, 1880
   1. Species Frevillea barbata A. Milne-Edwards, 1880
   2. Species Frevillea hirsuta (Borradaile, 1916)
   3. Species Frevillea rosaea A. Milne-Edwards, 1880
   4. Species Frevillea sigsbei A. Milne-Edwards, 1880 accepted as Goneplax sigsbei (A. Milne-Edwards, 1880) (unaccepted > superseded combination)
   5. Species Frevillea tridentata A. Milne-Edwards, 1880 accepted as Trapezioplax tridentata (A. Milne-Edwards, 1880) (unaccepted > superseded combination)
4. Genus Henicoplax Castro & Ng, 2010
   1. Species Henicoplax eriochir Castro & Ng, 2010
   2. Species Henicoplax maldivensis (Rathbun, 1902)
   3. Species Henicoplax nitida (Miers, 1879)
   4. Species Henicoplax pilimeles Castro & Ng, 2010
   5. Species Henicoplax trachydactylus Castro & Ng, 2010
5. Genus Heteroplax Stimpson, 1858
   1. Species Heteroplax transversa Stimpson, 1858
   2. Species Heteroplax dentata Stimpson, 1858 accepted as Trissoplax dentata (Stimpson, 1858) (unaccepted > unjustified emendation)
   3. Species Heteroplax dentatus Stimpson, 1858 accepted as Trissoplax dentata (Stimpson, 1858) (unaccepted > superseded combination)
   4. Species Heteroplax nagasakiensis Sakai, 1934 accepted as Heteroplax transversa Stimpson, 1858 (unaccepted > junior subjective synonym)
   5. Species Heteroplax nitidus Miers, 1879 accepted as Henicoplax nitida (Miers, 1879) (unaccepted > superseded combination)
   6. Species Heteroplax transversus Stimpson, 1858 accepted as Heteroplax transversa Stimpson, 1858 (unaccepted > superseded combination)
6. Genus Machaerus Leach, 1818
   1. Species Machaerus atlanticus (Miers, 1881)
   2. Species Machaerus oxyacanthus (Monod, 1956)
   3. Species Machaerus elata (A. Milne-Edwards, 1880) sensu Boone, 1927 accepted as Trapezioplax tridentata (A. Milne-Edwards, 1880) (unaccepted > junior subjective synonym, Machaerus elata (Boone, 1927) is not a valid name)
   4. Species Machaerus oxyacantha (Monod, 1956) accepted as Machaerus oxyacanthus (Monod, 1956) (unaccepted > misspelling - incorrect subsequent spelling)
7. Genus Nancyplax Lemaitre, García-Gómez, von Sternberg & Campos, 2001
   1. Species Nancyplax vossi Lemaitre, García-Gómez, von Sternberg & Campos, 2001
8. Genus Nectopanope Wood-Mason in Wood-Mason & Alcock, 1891
   1. Species Nectopanope rhodobaphes Wood-Mason in Wood-Mason & Alcock, 1891
   2. Species Nectopanope longipes Wood-Mason in Wood-Mason & Alcock, 1891 accepted as Carcinoplax longipes (Wood-Mason in Wood-Mason & Alcock, 1891) (unaccepted > superseded combination)
9. Genus Platyozius Borradaile, 1902
   1. Species Platyozius laevis (Borradaile, 1902)
   2. Species Platyozius perpusilla Nobili, 1906 accepted as Litocheira perpusilla (Nobili, 1906) (unaccepted > superseded combination)
10. Genus Psopheticoides Sakai, 1969
    1. Species Psopheticoides sanguineus Sakai, 1969
11. Genus Systroplax Castro & Ng, 2010
    1. Species Systroplax angusta (Rathbun, 1914)
12. Genus Trissoplax Castro & Ng, 2010
    1. Species Trissoplax dentata (Stimpson, 1858)
    2. Species Trissoplax tuberosa Castro & Ng, 2010
13. Genus Trizocarcinus Rathbun, 1914
    1. Species Trizocarcinus dentatus (Rathbun, 1894)
    2. Species Trizocarcinus tacitus Chace, 1940
    3. Species Trizocarcinus peruvianus Garth, 1973 accepted as Villoplax peruvianus (Garth, 1973) (unaccepted > superseded combination)
14. Genus Villoplax Castro & Ng, 2010
    1. Species Villoplax peruvianus (Garth, 1973)
15. Genus Xenocrate Ng & Castro, 2007
    1. Species Xenocrate peculiaris Ng & Castro, 2007
16. Subfamily Euryplacinae Stimpson, 1871 accepted as Euryplacidae Stimpson, 1871
17. Subfamily Michaeliinae Števčić, 2011 accepted as Goneplacidae MacLeay, 1838 (unused rank)
18. Genus Nectopanope Anonymous, 1891 accepted as Nectopanope Wood-Mason in Wood-Mason & Alcock, 1891 (unaccepted > junior subjective synonym, name already available from Wood-Mason in Wood-Mason & Alcock, 1891)
    1. Species Nectopanope longipes Anonymous, 1891 accepted as Nectopanope rhodobaphes Wood-Mason in Wood-Mason & Alcock, 1891 (unaccepted > junior subjective synonym, name already available from Wood-Mason in Wood-Mason & Alcock, 1891)

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