1. Subfamily Polygyrinae Pilsbry, 1895
   1. Genus Daedalochila H. Beck, 1837
   2. Genus Erectidens Pilsbry, 1953
   3. Genus Giffordius Pilsbry, 1930
   4. Genus Linisa Pilsbry, 1930
   5. Genus Lobosculum Pilsbry, 1930
   6. Genus Polygyra Say, 1818
   7. Genus Praticolella E. von Martens, 1892
   8. Genus Trifaux H. B. Baker, 1935
   9. Genus Acutidens Pilsbry, 1956 accepted as Linisa Pilsbry, 1930 (unaccepted > junior subjective synonym)
   10. Genus Anchistoma H. Adams & A. Adams, 1855 accepted as Polygyra Say, 1818 (unaccepted > junior subjective synonym)
   11. Genus Cyclodoma Swainson, 1840 accepted as Polygyra Say, 1818 (unaccepted > junior objective synonym, same type species)
   12. Genus Erymodon Pilsbry, 1956 accepted as Linisa Pilsbry, 1930 (unaccepted > junior subjective synonym)
   13. Genus Millerelix K. C. Emberton, 1995 accepted as Daedalochila H. Beck, 1837 (unaccepted > junior subjective synonym)
   14. Genus Monophysis Pilsbry, 1956 accepted as Linisa Pilsbry, 1930 (unaccepted > junior subjective synonym)
   15. Genus Polygira [sic] accepted as Polygyra Say, 1818 (unaccepted > misspelling - incorrect subsequent spelling)
   16. Genus Polygra [sic] accepted as Polygyra Say, 1818 (unaccepted > misspelling - incorrect subsequent spelling)
   17. Genus Praticola Strebel & Pfeffer, 1879 accepted as Praticolella E. von Martens, 1892 (invalid: junior homonym of Praticola Swainson, 1837 [Aves]; Praticolella is a replacement name.)
   18. Genus Solidens Pilsbry, 1956 accepted as Linisa Pilsbry, 1930 (unaccepted > junior subjective synonym)
   19. Genus Ulostoma Albers, 1850 accepted as Polygyra Say, 1818
2. Subfamily Triodopsinae Pilsbry, 1940
   1. Tribe Allogonini K. C. Emberton, 1995
      1. Genus Allogona Pilsbry, 1939
      2. Genus Cryptomastix Pilsbry, 1939
      3. Genus Trilobopsis Pilsbry, 1939
   2. Tribe Ashmunellini G. R. Webb, 1954
      1. Genus Ashmunella Pilsbry & T. D. A. Cockerell, 1899
   3. Tribe Mesodontini Tryon, 1866
      1. Genus Appalachina Pilsbry, 1940
      2. Genus Fumonelix K. C. Emberton, 1991
      3. Genus Inflectarius Pilsbry, 1940
      4. Genus Mesodon A. Férussac, 1821
      5. Genus Patera Albers, 1850
      6. Genus Odomphium Rafinesque, 1831 accepted as Mesodon A. Férussac, 1821 (unaccepted > junior subjective synonym)
      7. Genus Odotropis Rafinesque, 1819 accepted as Patera Albers, 1850
      8. Genus Trophodon Rafinesque, 1831 accepted as Odotropis Rafinesque, 1819 accepted as Patera Albers, 1850 (unaccepted > junior objective synonym)
   4. Tribe Stenotrematini K. C. Emberton, 1995
      1. Genus Euchemotrema Archer, 1939
      2. Genus Stenotrema Rafinesque, 1819
      3. Genus Caracollatus Archer, 1948 accepted as Stenotrema Rafinesque, 1819 (unaccepted > junior subjective synonym)
      4. Genus Chimotrema Rafinesque, 1819 accepted as Stenotrema Rafinesque, 1819 (unaccepted > junior subjective synonym)
      5. Genus Maxillifer Pilsbry, 1940 accepted as Stenotrema Rafinesque, 1819 (unaccepted > junior subjective synonym)
      6. Genus Stenostoma Rafinesque, 1831 accepted as Stenotrema (Stenotrema) Rafinesque, 1819 represented as Stenotrema Rafinesque, 1819 (unaccepted > junior subjective synonym)
      7. Genus Toxotrema Rafinesque, 1819 accepted as Stenotrema (Toxotrema) Rafinesque, 1819 represented as Stenotrema Rafinesque, 1819 (unaccepted > superseded rank)
   5. Tribe Triodopisini Pilsbry, 1940
      1. Genus Neohelix Ihering, 1892
      2. Genus Triodopsis Rafinesque, 1819
      3. Genus Webbhelix K. C. Emberton, 1988
      4. Genus Xolotrema Rafinesque, 1819
   6. Tribe Vespericolini K. C. Emberton, 1994
      1. Genus Hochbergellus B. Roth & W. B. Miller, 1992
      2. Genus Vespericola Pilsbry, 1939
3. Genus Zhenjiangospira W. Yü, 1977 †
4. Genus Linisca [sic] accepted as Linisa Pilsbry, 1930 (unaccepted > misspelling - incorrect subsequent spelling)

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