1. Species Megalodon cucullatus J. De C. Sowerby, 1827 †
2. Species Megalodon yanceyi Nakazawa, 2002 †
3. Subgenus Megalodon (Megalodon) J. De C. Sowerby, 1827 † accepted as Megalodon J. De C. Sowerby, 1827 † (unaccepted > superseded combination)
   1. Species Megalodon (Megalodon) longjiangensis S.-F. Liang, 1980 † (uncertain > unassessed)
   2. Species Megalodon (Megalodon) wushiensis Z.-R. Yang, 1983 † (uncertain > unassessed)
   3. Species Megalodon (Megalodon) xinjiangensis Z.-R. Yang, 1983 † (uncertain > unassessed)
4. Subgenus Megalodon (Neomegalodon) Gümbel, 1862 † accepted as Neomegalodon Gümbel, 1862 † (unaccepted > superseded combination)
   1. Species Megalodon (Neomegalodon) complanatus Gümbel, 1862 † accepted as Neomegalodon complanatus Gümbel, 1862 †
   2. Species Megalodon (Neomegalodon) guembelii Stoppani, 1865 † accepted as Neomegalodon guembelii Stoppani, 1865 † (unaccepted > superseded combination)
   3. Species Megalodon (Neomegalodon) seccoi (Parona, 1888) † accepted as Neomegalodon seccoi (Parona, 1888) † (unaccepted > superseded combination)
   4. Species Megalodon (Neomegalodon) triqueter (Wulfen, 1793) † accepted as Neomegalodon triqueter (Wulfen, 1793) † (unaccepted > superseded combination)
   5. Species Megalodon (Neomegalodon) jomdaensis Z.-M. Zhang, 1985 † (uncertain > unassessed)
5. Subgenus Megalodon (Pachymegalodon) Gümbel, 1862 † accepted as Pachymegalodon Gümbel, 1862 † (unaccepted > superseded combination)
6. Species Megalodon canadensis Shimer, 1926 † accepted as Triadomegalodon canadensis (Shimer, 1926) † (unaccepted > superseded combination)
7. Species Megalodon carinthiacum (Boué, 1835) † accepted as Physocardia carinthiaca (Boué, 1835) † (unaccepted > superseded combination)
8. Species Megalodon cassianus R. Hoernes, 1876 † accepted as Triadomegalodon cassianus (R. Hoernes, 1876) † (unaccepted > superseded combination)
9. Species Megalodon cultridens Bittner, 1899 † accepted as Rhaetomegalodon cultridens (Bittner, 1899) † (unaccepted > superseded combination)
10. Species Megalodon damesi R. Hoernes, 1876 † accepted as Triadomegalodon damesi (R. Hoernes, 1876) † (unaccepted > superseded combination)
11. Species Megalodon globularis Trechmann, 1918 † accepted as Mysidioptera globularis (Trechmann, 1918) † (unaccepted > superseded combination)
12. Species Megalodon gryphoides Gümbel, 1861 † accepted as Triadomegalodon gryphoides (Gümbel, 1861) † (unaccepted > superseded combination)
13. Species Megalodon hispanicus Wurm, 1913 † accepted as Neomegalodon hispanicus (Wurm, 1913) † (unaccepted > superseded combination)
14. Species Megalodon klipsteinii Bittner, 1895 † accepted as Neomegalodon klipsteinii (Bittner, 1895) † (unaccepted > superseded combination)
15. Species Megalodon ladakhensis Bittner, 1899 † accepted as Triadomegalodon ladakhensis (Bittner, 1899) † (unaccepted > superseded combination)
16. Species Megalodon malladae Wurm, 1913 † accepted as Neomegalodon malladae (Wurm, 1913) † (unaccepted > superseded combination)
17. Species Megalodon mojsvari R. Hoernes, 1876 † accepted as Triadomegalodon mojsvari (R. Hoernes, 1876) † (unaccepted > superseded combination)
18. Species Megalodon poolei J. Böhm, 1904 † accepted as Neomegalodon poolei (J. Böhm, 1904) † (unaccepted > superseded combination)
19. Species Megalodon rostratiforme Krumbeck, 1913 † accepted as Neomegalodon rostratiformis (Krumbeck, 1913) † (unaccepted > superseded combination)
20. Species Megalodon rotundatus J. Böhm, 1904 † accepted as Neomegalodon rotundatus (J. Böhm, 1904) † (unaccepted > superseded combination)
21. Species Megalodon seccoi Parona, 1888 † accepted as Neomegalodon seccoi (Parona, 1888) † (unaccepted > superseded combination)
22. Species Megalodon stoppani R. Hoernes, 1876 † accepted as Neomegalodon stoppani (R. Hoernes, 1876) † (unaccepted > superseded combination)
23. Species Megalodon subcolumbella Koken, 1913 † accepted as Neomegalodon subcolumbellus (Koken, 1913) † (unaccepted > superseded combination)
24. Species Megalodon subtriqueter Fiedler, 1904 † accepted as Neomegalodon triqueter subtriqueter (Fiedler, 1904) † (unaccepted > superseded combination)
25. Species Megalodon tofanae R. Hoernes, 1876 † accepted as Triadomegalodon tofanae (R. Hoernes, 1876) † (unaccepted > superseded combination)
26. Species Megalodon tommasii Repossi, 1904 † accepted as Neomegalodon tommasii (Repossi, 1904) † (unaccepted > superseded combination)
27. Species Megalodon triqueter (Wulfen, 1793) † accepted as Neomegalodon triqueter (Wulfen, 1793) † (unaccepted > superseded combination)
28. Species Megalodon angustus G. Boehm, 1884 † (uncertain > unassessed)
29. Species Megalodon ovatus G. Boehm, 1884 † (uncertain > unassessed)
30. Species Megalodon protractus G. Boehm, 1884 † (uncertain > unassessed)
31. Species Megalodon tongrenensis Chen & Z.-M. Zhang, 1979 † (uncertain > unassessed)

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