1. Subgenus Monodonta (Trochus) Linnaeus, 1758 accepted as Trochus Linnaeus, 1758 (unaccepted > superseded rank)
   1. Species Monodonta (Trochus) cassiana Wissmann, 1841 † accepted as Monodonta cassiana Wissmann, 1841 † (unaccepted > superseded combination)
   2. Species Monodonta (Trochus) nodosa Münster, 1841 † accepted as Monodonta nodosa Münster, 1841 † (unaccepted > superseded combination)
2. Species Monodonta arata Lycett, 1863 † (uncertain > unassessed)
3. Species Monodonta cassiana Wissmann, 1841 † (uncertain > unassessed)
4. Species Monodonta comma Lycett, 1863 † (uncertain > unassessed)
5. Species Monodonta composita Lycett, 1863 † (uncertain > unassessed)
6. Species Monodonta decussata J. Morris & Lycett, 1851 † (uncertain > unassessed)
7. Species Monodonta delicata Laube, 1870 † (uncertain > unassessed)
8. Species Monodonta elegans Münster, 1841 † (uncertain > unassessed)
9. Species Monodonta exigua Lycett, 1863 † (uncertain > unassessed)
10. Species Monodonta formosa J. Morris & Lycett, 1851 † (uncertain > unassessed)
11. Species Monodonta gracilis Laube, 1870 † (uncertain > unassessed)
12. Species Monodonta imbricata J. Morris & Lycett, 1851 † (uncertain > unassessed)
13. Species Monodonta lycetti Lycett, 1863 † (uncertain > unassessed)
14. Species Monodonta lyelli d'Archiac, 1843 † (uncertain > unassessed)
15. Species Monodonta nodosa Münster, 1841 † (uncertain > unassessed)
16. Species Monodonta polydonta Bronn, 1831 † (uncertain > unassessed)
17. Species Monodonta sparsistriata Lycett, 1863 † (uncertain > unassessed)
18. Species Monodonta tegulata Lycett, 1863 † (uncertain > unassessed)
19. Species Monodonta trochleata Dujardin, 1837 † (uncertain > unassessed)
20. Species Monodonta waltoni Lycett, 1863 † (uncertain > unassessed)

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