1. Subfamily Crassatellinae
   1. Genus Anthonya W. M. Gabb, 1864 †
   2. Genus Bathytormus R. B. Stewart, 1930
   3. Genus Chattina M. Huber, 2010
   4. Genus Chattonia Marwick, 1929 †
   5. Genus Crassasulca H. E. Vokes, 1988
   6. Genus Crassatella Lamarck, 1799
   7. Genus Crenocrassatella T. Habe, 1951
   8. Genus Eucrassatella Iredale, 1924
   9. Genus Fluctiger Iredale, 1924
   10. Genus Hybolophus R. B. Stewart, 1930
   11. Genus Indocrassatella Chavan, 1952
   12. Genus Kalolophus DeVries, 2016
   13. Genus Nipponocrassatella Kuroda & T. Habe, 1971
   14. Genus Salaputium Iredale, 1924
   15. Genus Talabrica Iredale, 1924
   16. Genus Tilicrassatella DeVries, 2016 †
   17. Genus Eucrassinella Cruz, 1980 accepted as Eucrassatella Iredale, 1924 (not available: no type species designated)
   18. Genus Marvacrassatella Ward & Blackwelder, 1987 † accepted as Eucrassatella Iredale, 1924 (synonym)
   19. Genus Scambula Conrad, 1869 accepted as Crassatellites Krüger, 1823 † accepted as Crassatella Lamarck, 1799 (unaccepted > junior subjective synonym)
2. Genus Crassatina Kobelt, 1881
3. Genus Crassovella Berezovsky, 2018 †
4. Genus Cypricardella J. Hall, 1858 †
5. Genus Elsius M. Huber, 2015
6. Subfamily Scambulinae Chavan, 1952
   1. Genus Crassinella Guppy, 1874
   2. Genus Mediraon H. E. Vokes, 1946 †
   3. Genus Remondia Gabb, 1869 †
   4. Genus Pseuderiphyla P. Fischer, 1887 accepted as Crassinella Guppy, 1874 (unnecessary replacement name for Crassinella Guppy, 1874)
7. Genus Seendia R. Casey, 1961 †
8. Genus Spissatella Finlay, 1926 †
9. Genus Stearnsia C. A. White, 1887 †
10. Genus Triplicitella K. S. Collins, J. S. Crampton & M. Hannah, 2015 †
11. Genus Crassatellites Krüger, 1823 † accepted as Crassatella Lamarck, 1799 (unaccepted > unavailable name, Not a valid name under Art. 20: name formed by adding the suffix -ites to the genus name Crassatella)

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