1. Genus Austriacopsis Wenz, 1938 †
2. Subfamily Diodorinae Odhner, 1932
   1. Genus Cosmetalepas Iredale, 1924
   2. Genus Diodora J. E. Gray, 1821
   3. Genus Fissurellidea A. d'Orbigny, 1839
   4. Genus Lucapina J. E. Gray, 1835
   5. Genus Megathura Pilsbry, 1890
   6. Genus Monodilepas H. J. Finlay, 1926
   7. Genus Austroglyphis Cotton & Godfrey, 1934 accepted as Diodora J. E. Gray, 1821
   8. Genus Capiluna Gray, 1857 accepted as Diodora J. E. Gray, 1821
   9. Genus Elegidion Iredale, 1924 accepted as Diodora J. E. Gray, 1821 (unaccepted > junior subjective synonym)
   10. Genus Fissurellidaea [sic] accepted as Fissurellidea A. d'Orbigny, 1839 (misspelling of genus)
   11. Genus Fissuridea Swainson, 1840 accepted as Diodora J. E. Gray, 1821 (unaccepted > junior subjective synonym)
   12. Genus Foraminella G. B. Sowerby I, 1835 accepted as Lucapina J. E. Gray, 1835 (Not available: introduced in synonymy; placed in synonymy of Lucapina by First Reviser's choice by Thiele, 1929)
   13. Genus Glyphis P. P. Carpenter, 1857 accepted as Diodora J. E. Gray, 1821 (invalid: junior homonym of Glyphis Agassiz, 1843)
   14. Genus Megatebennus Pilsbry, 1890 accepted as Fissurellidea A. d'Orbigny, 1839
3. Subfamily Emarginulinae Children, 1834
   1. Genus Agariste Monterosato, 1892
   2. Genus Altrix K. van W. Palmer, 1942
   3. Genus Arginula K. van W. Palmer, 1937
   4. Genus Buchanania Lesson, 1831
   5. Genus Clathrosepta J. H. McLean & D. L. Geiger, 1998
   6. Genus Clypidina Gray, 1847
   7. Genus Emarginella Pilsbry, 1891
   8. Genus Emarginula Lamarck, 1801
   9. Genus Entomella Cossmann, 1888 †
   10. Genus Fissurisepta G. Seguenza, 1863
   11. Genus Laeviemarginula Habe, 1953
   12. Genus Laevinesta Pilsbry & T. L. McGinty, 1952
   13. Genus Manganesepta J. H. McLean & D. L. Geiger, 1998
   14. Genus Montfortula Iredale, 1915
   15. Genus Palaeoloxotoma Hansen, 2019 †
   16. Genus Parmaphorella Strebel, 1907
   17. Genus Pupillaea Gray, 1835
   18. Genus Rixa Iredale, 1924
   19. Genus Scelidotoma J. H. McLean, 1966
   20. Genus Scutus Montfort, 1810
   21. Genus Stromboli S. S. Berry, 1954
   22. Genus Tugali J. E. Gray, 1843
   23. Genus Tugalina Habe, 1953
   24. Genus Vacerrena Iredale, 1958
   25. Genus Aviscutum Iredale, 1940 accepted as Scutus Montfort, 1810
   26. Genus Entomella Cotton, 1945 accepted as Emarginula Lamarck, 1801 (invalid: junior homonym of Entomella Cossmann, 1888; Notomella is a replacement name)
   27. Genus Loxotoma P. Fischer, 1885 † accepted as Palaeoloxotoma Hansen, 2019 † (invalid: junior homonym of Loxotoma Zeller, 1854 [Lepidoptera]; Palaeoloxotoma is a replacement name)
   28. Genus Nannoscutum Iredale, 1937 accepted as Scutus Montfort, 1810
   29. Genus Notomella Cotton, 1957 accepted as Emarginula Lamarck, 1801 (junior subjective synonym)
   30. Genus Parmophoridea Wenz, 1938 accepted as Parmaphorella Strebel, 1907 (unnecessary replacement name)
   31. Genus Parmophorus Blainville, 1817 accepted as Scutus Montfort, 1810 (unnecessary substitute name for Scutus)
   32. Genus Plagiorhytis P. Fischer, 1885 accepted as Montfortula Iredale, 1915 (Invalid: junior homonym of Plagiorhytis Chaudoir, 1848)
   33. Genus Rimulanax Iredale, 1924 accepted as Puncturella (Cranopsis) A. Adams, 1860 accepted as Puncturella R. T. Lowe, 1827 (unaccepted > junior subjective synonym)
   34. Genus Rimularia Bronn, 1838 accepted as Rimula Defrance, 1827 (unjustified emendation of Rimula Defrance, 1827)
   35. Genus Scutum P. Fischer, 1885 accepted as Scutus Montfort, 1810 (invalid: unjustified emendation of Scutus)
   36. Genus Semperia Crosse, 1867 accepted as Emarginula Lamarck, 1801 (junior subjective synonym)
   37. Genus Subzeidora Iredale, 1924 accepted as Emarginula (Subzeidora) Iredale, 1924 represented as Emarginula Lamarck, 1801
   38. Genus Tugalia [sic] accepted as Tugali J. E. Gray, 1843 (incorrect subsequent spelling)
   39. Genus Vacerra Iredale, 1924 accepted as Vacerrena Iredale, 1958 (invalid: junior homonym of Vacerra Godman, 1900 [Lepidoptera]; Vacerrena is a replacement name)
   40. Genus Variegemarginula J. H. McLean, 2011 accepted as Montfortula Iredale, 1915
   41. Genus Clypidella Swainson, 1840 (uncertain > taxon inquirendum)
4. Subfamily Fissurellinae J. Fleming, 1822
   1. Genus Amblychilepas Pilsbry, 1890
   2. Genus Atractotrema Cossmann, 1888 †
   3. Genus Dendrofissurella J. H. McLean & Kilburn, 1986
   4. Genus Fissurella Bruguière, 1789
   5. Genus Leurolepas J. H. McLean, 1970
   6. Genus Lucapinella Pilsbry, 1890
   7. Genus Macroschisma Gray, 1835
   8. Genus Medusafissurella J. H. McLean & Kilburn, 1986
   9. Genus Balboaina Pérez Farfante, 1943 accepted as Fissurella Bruguière, 1789
   10. Genus Dolichoschisma Iredale, 1940 accepted as Macroschisma Gray, 1835
   11. Genus Forolepas Iredale, 1940 accepted as Macroschisma Gray, 1835
   12. Genus Machrochisma accepted as Macroschisma Gray, 1835 (misspelling)
   13. Genus Macrochisma Gray, 1835 accepted as Macroschisma Gray, 1835 (unaccepted > misspelling - incorrect subsequent spelling)
   14. Genus Sophismalepas Iredale, 1924 accepted as Amblychilepas Pilsbry, 1890
5. Genus Puncturellopsis Dacqué, 1934 †
6. Subfamily Rimulinae Anton, 1838
   1. Genus Rimula Defrance, 1827
7. Genus Rimulopsis Dacqué, 1934 †
8. Subfamily Zeidorinae Naef, 1913
   1. Genus Cornisepta J. H. McLean & D. L. Geiger, 1998
   2. Genus Hemimarginula J. H. McLean, 2011
   3. Genus Hemitoma Swainson, 1840
   4. Genus Montfortia Récluz, 1843
   5. Genus Montfortista Iredale, 1929
   6. Genus Montfortulana Habe, 1961
   7. Genus Octomarginula J. H. McLean, 2011
   8. Genus Profundisepta J. H. McLean & D. L. Geiger, 1998
   9. Genus Puncturella R. T. Lowe, 1827
   10. Genus Zeidora A. Adams, 1860
   11. Genus Cemoria Risso, 1826 accepted as Puncturella R. T. Lowe, 1827 (junior subjective synonym)
   12. Genus Crepiemarginula G. Seguenza, 1880 † accepted as Zeidora A. Adams, 1860
   13. Genus Legrandia C. E. Beddome, 1883 accepted as Zeidora A. Adams, 1860 (invalid: junior homonym of Legrandia Hanley, 1872)
   14. Genus Nesta H. Adams, 1870 accepted as Zeidora A. Adams, 1860
   15. Genus Sipho T. Brown, 1827 accepted as Puncturella R. T. Lowe, 1827
   16. Genus Siphonella Issel, 1869 accepted as Montfortista Iredale, 1929 (Invalid: junior homonym of Siphonella Hagenow, 1851)
   17. Genus Subemarginula J. E. Gray, 1847 accepted as Hemitoma Swainson, 1840 (same type species)
   18. Genus Zidora P. Fischer, 1885 accepted as Zeidora A. Adams, 1860 (invalid: unjustified emendation of Zeidora A. Adams, 1860)
   19. Genus Cranopsis A. Adams, 1860 (uncertain, validity debated)
9. Subfamily Fissurellideinae Pilsbry, 1890 accepted as Emarginulinae Children, 1834
10. Subfamily Hemitominae Kuroda & Habe, 1971 accepted as Zeidorinae Naef, 1913
11. Genus Deridobranchus Ehrenberg, 1831 (uncertain > nomen dubium)

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