1. Subfamily Cassinae Latreille, 1825
   1. Genus Cassis Scopoli, 1777
   2. Genus Cypraecassis Stutchbury, 1837
   3. Genus Dalium Dall, 1889
   4. Genus Eucorys Beu, 2008
   5. Genus Galeodea Link, 1807
   6. Genus Haydenia Gabb, 1864 †
   7. Genus Microsconsia Beu, 2008
   8. Genus Oocorys P. Fischer, 1884
   9. Genus Sconsia J. E. Gray, 1847
   10. Genus Benthodolium A. E. Verrill, 1884 accepted as Oocorys P. Fischer, 1884
   11. Genus Casis [sic] accepted as Cassis Scopoli, 1777 (unaccepted > misspelling - incorrect subsequent spelling)
   12. Genus Cassidaria Lamarck, 1816 accepted as Galeodea Link, 1807 (unaccepted > junior objective synonym, junior objective synonym of Galeodea, with the same type species)
   13. Genus Cassidea Bruguière, 1789 accepted as Cassis Scopoli, 1777
   14. Genus Cassisoma Rovereto, 1899 † accepted as Cassis Scopoli, 1777 (unaccepted > junior subjective synonym)
   15. Genus Cypraeicassis Cossmann, 1903 accepted as Cypraecassis Stutchbury, 1837 (unaccepted > unjustified emendation)
   16. Genus Echinora Schumacher, 1817 accepted as Galeodea Link, 1807 (junior objective synonym of Galeodea)
   17. Genus Galeodosconsia Sacco, 1890 † accepted as Sconsia J. E. Gray, 1847
   18. Genus Galeoocorys Kuroda & T. Habe, 1957 accepted as Galeodea Link, 1807 (unaccepted > junior subjective synonym)
   19. Genus Goniogalea Mörch, 1857 accepted as Cassis Scopoli, 1777
   20. Genus Hadroocorys Quinn, 1980 accepted as Oocorys P. Fischer, 1884 (junior synonym)
   21. Genus Hypocassis Iredale, 1927 accepted as Cassis (Hypocassis) Iredale, 1927 represented as Cassis Scopoli, 1777
   22. Genus Levenia J. E. Gray, 1847 accepted as Cypraecassis Stutchbury, 1837 (unaccepted > junior subjective synonym)
   23. Genus Morio Montfort, 1810 accepted as Galeodea Link, 1807 (junior objective synonym of Galeodea)
   24. Genus Nannocassis Iredale, 1927 accepted as Cassis (Hypocassis) Iredale, 1927 represented as Cassis Scopoli, 1777
   25. Genus Taieria Finlay & Marwick, 1937 † accepted as Galeodea Link, 1807 (unaccepted > junior subjective synonym)
2. Subfamily Phaliinae Beu, 1981
   1. Genus Antephalium Iredale, 1927
   2. Genus Casmaria H. Adams & A. Adams, 1853
   3. Genus Echinophoria Sacco, 1890
   4. Genus Phalium Link, 1807
   5. Genus Semicassis Mörch, 1852
   6. Genus Bathygalea Woodring & Olsson, 1957 accepted as Echinophoria Sacco, 1890
   7. Genus Bezoardica Schumacher, 1817 accepted as Phalium Link, 1807 (junior objective synonym of Phalium)
   8. Genus Bezoardicella T. Habe, 1961 accepted as Phalium Link, 1807 (unaccepted > junior subjective synonym)
   9. Genus Euspinacassis H. J. Finlay, 1926 accepted as Echinophoria Sacco, 1890
   10. Genus Faurotis Jousseaume, 1888 accepted as Semicassis Mörch, 1852
   11. Genus Trachydolium Howe, 1926 † accepted as Echinophoria Sacco, 1890
   12. Genus Tylocassis Woodring, 1928 accepted as Semicassis Mörch, 1852
   13. Genus Xenogalea Iredale, 1927 accepted as Semicassis Mörch, 1852
   14. Genus Xenophalium Iredale, 1927 accepted as Semicassis Mörch, 1852
3. Subfamily Oocorythinae P. Fischer, 1885 accepted as Cassinae Latreille, 1825
4. Subfamily Cassidae incertae sedis (temporary name)
   1. Genus Mariacassis Petuch, 1988 †
   2. Genus Sconsodolium Beu, 2005 †
5. Genus Morionassa Sacco, 1890 † (uncertain > unassessed)

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