1. Subfamily Acanthochitoninae Simroth, 1894 (1881)
   1. Genus Acanthochitona J. E. Gray, 1821
   2. Genus Americhiton Watters, 1990
   3. Genus Bassethullia Pilsbry, 1928
   4. Genus Choneplax P. P. Carpenter, 1882
   5. Genus Craspedochiton Shuttleworth, 1853
   6. Genus Craspedoplax Iredale & Hull, 1925
   7. Genus Cryptoconchus Burrow, 1815
   8. Genus Leptoplax Dall, 1882
   9. Genus Notoplax H. Adams, 1862
   10. Genus Pseudoacanthochitona Šulc, 1934 †
   11. Genus Pseudotonicia Ashby, 1928
   12. Genus Acanthochaetes Risso, 1826 accepted as Acanthochitona J. E. Gray, 1821 (synonym and incorrect subsequent spelling of Acanthochites Risso, 1826)
   13. Genus Acanthochites Risso, 1826 accepted as Acanthochitona J. E. Gray, 1821 (unaccepted > junior subjective synonym)
   14. Genus Acanthochiton Herrmannsen, 1846 accepted as Acanthochitona J. E. Gray, 1821 (invalid: unjustified emendation of Acanthochites Risso, 1826)
   15. Genus Acantochiton [sic] accepted as Acanthochiton Herrmannsen, 1846 accepted as Acanthochitona J. E. Gray, 1821 (unaccepted > misspelling - incorrect subsequent spelling)
   16. Genus Angasia P. P. Carpenter, 1882 accepted as Craspedochiton Shuttleworth, 1853
   17. Genus Anisochiton P. Fischer, 1885 accepted as Acanthochitona J. E. Gray, 1821 (synonym)
   18. Genus Aristochiton Thiele, 1909 accepted as Notoplax H. Adams, 1862 (unaccepted > junior subjective synonym)
   19. Genus Chitonellus Lamarck, 1819 accepted as Cryptoplax Blainville, 1818 (unaccepted > junior subjective synonym)
   20. Genus Eoplax Ashby & Cotton, 1936 † accepted as Notoplax H. Adams, 1862 (unaccepted > junior subjective synonym)
   21. Genus Glyptelasma Iredale & Hull, 1925 accepted as Bassethullia Pilsbry, 1928
   22. Genus Loboplax Pilsbry, 1893 accepted as Notoplax H. Adams, 1862 (synonym)
   23. Genus Lophoplax Ashby, 1926 accepted as Notoplax H. Adams, 1862
   24. Genus Macandrellus Dall, 1879 accepted as Notoplax H. Adams, 1862 (synonym)
   25. Genus Mecynoplax Thiele, 1893 accepted as Notoplax H. Adams, 1862 (unaccepted > junior subjective synonym)
   26. Genus Meturoplax Pilsbry, 1894 accepted as Acanthochitona J. E. Gray, 1821
   27. Genus Phacellozona Pilsbry, 1894 accepted as Craspedochiton Shuttleworth, 1853
   28. Genus Spongiochiton P. P. Carpenter, 1882 accepted as Craspedochiton Shuttleworth, 1853 (unaccepted > junior subjective synonym)
   29. Genus Thaumastochiton Thiele, 1909 accepted as Craspedochiton Shuttleworth, 1853
2. Genus Afossochiton Ashby, 1925 †
3. Subfamily Cryptochitoninae Pilsbry, 1893
   1. Genus Cryptochiton Middendorff, 1847
4. Genus Sulcichiton Sirenko, 2021
5. Subfamily Afossochitoninae Ashby, 1925 accepted as Acanthochitonidae Simroth, 1894 (1881)
6. Genus Amblyplax Ashby, 1926 accepted as Notoplax H. Adams, 1862
7. Genus Lirachiton Ashby & Cotton, 1939 † accepted as Bassethullia Pilsbry, 1928 (unaccepted > junior subjective synonym)

The webpage text is licensed under a Creative Commons Attribution 4.0 License