1. Species Mesoplodon bidens (Sowerby, 1804)
2. Species Mesoplodon bowdoini Andrews, 1908
3. Species Mesoplodon carlhubbsi Moore, 1963
4. Species Mesoplodon densirostris (de Blainville, 1817)
5. Species Mesoplodon eueu Carroll, McGowen, McCarthy, Marx, Aguilar, Dalebout, Dreyer, Gaggiotti, Hansen, van Helden, Onoufriou, Baird, Baker, Berrow, Cholewiak, Claridge, Constantine, Davison, Eira, Fordyce, Gatesy, Hofmeyr, Martín, Mead, Mignucci-Giannoni, Morin, Reyes, Rogan, Rosso, Silva, Springer, Steel & Olsen, 2021
6. Species Mesoplodon europaeus (Gervais, 1855)
7. Species Mesoplodon ginkgodens Nishiwaki & Kamiya, 1958
8. Species Mesoplodon grayi von Haast, 1876
9. Species Mesoplodon hectori (Gray, 1871)
10. Species Mesoplodon hotaula Deraniyagala, 1963
11. Species Mesoplodon layardii (Gray, 1865)
12. Species Mesoplodon mirus True, 1913
13. Species Mesoplodon perrini Dalebout, Mead, Baker, Baker & van Helden, 2002
14. Species Mesoplodon peruvianus Reyes, Mead & Van Waerebeek, 1991
15. Species Mesoplodon stejnegeri True, 1885
16. Species Mesoplodon traversii (Gray, 1874)
17. Species Mesoplodon australis Flower, 1878 accepted as Mesoplodon grayi von Haast, 1876 (synonym)
18. Species Mesoplodon bahamondi Reyes, Van Waerebeek, Cardenas & Yanez, 1996 accepted as Mesoplodon traversii (Gray, 1874) (synonym)
19. Species Mesoplodon bidens Nishiwaki, 1957 accepted as Mesoplodon ginkgodens Nishiwaki & Kamiya, 1958 (misidentification)
20. Species Mesoplodon bowdoini Hubbs, 1946 accepted as Mesoplodon carlhubbsi Moore, 1963 (misidentification)
21. Species Mesoplodon bowdoini Nishiwaki, 1962 accepted as Mesoplodon stejnegeri True, 1885 (misidentification)
22. Species Mesoplodon densirostris Ogawa, 1938 accepted as Mesoplodon ginkgodens Nishiwaki & Kamiya, 1958 (misidentification)
23. Species Mesoplodon densirostris Gunther, 1955 accepted as Mesoplodon europaeus (Gervais, 1855) (misidentification)
24. Species Mesoplodon floweri Haast, 1876 accepted as Mesoplodon layardii (Gray, 1865) (synonym)
25. Species Mesoplodon gervaisi Ellerman & Morrison-Scott, 1951 accepted as Mesoplodon europaeus (Gervais, 1855) (synonym)
26. Species Mesoplodon ginkgodens Baker & van Helden, 1999 accepted as Mesoplodon traversii (Gray, 1874) (synonym)
27. Species Mesoplodon guentheri Krefft, 1871 accepted as Mesoplodon layardii (Gray, 1865) (synonym)
28. Species Mesoplodon haasti Flower, 1878 accepted as Mesoplodon grayi von Haast, 1876 (synonym)
29. Species Mesoplodon hectori Mead, 1981 accepted as Mesoplodon perrini Dalebout, Mead, Baker, Baker & van Helden, 2002 (misidentification)
30. Species Mesoplodon hectori Flower, 1878 accepted as Mesoplodon hectori (Gray, 1871) (synonym)
31. Species Mesoplodon knoxi Hector, 1873 accepted as Mesoplodon hectori (Gray, 1871) (synonym)
32. Species Mesoplodon layardi Flower, 1878 accepted as Mesoplodon layardii (Gray, 1865) (synonym)
33. Species Mesoplodon layardi Lahille, 1905 accepted as Mesoplodon grayi von Haast, 1876 (synonym)
34. Species Mesoplodon layardi McCann, 1962 accepted as Mesoplodon traversii (Gray, 1874) (synonym)
35. Species Mesoplodon layardii Hector, 1878 accepted as Mesoplodon traversii (Gray, 1874) (synonym)
36. Species Mesoplodon longirostris Gray, 1873 accepted as Mesoplodon layardii (Gray, 1865) (synonym)
37. Species Mesoplodon mirum True, 1913 accepted as Mesoplodon mirus True, 1913 (improper ending)
38. Species Mesoplodon pacificus Longman, 1926 accepted as Indopacetus pacificus (Longman, 1926) (Basionym)
39. Species Mesoplodon sowerbensis Gervais, 1859 accepted as Mesoplodon bidens (Sowerby, 1804) (synonym)
40. Species Mesoplodon sowerbiensis J. A. Allen, 1869 accepted as Mesoplodon bidens (Sowerby, 1804) (synonym)
41. Species Mesoplodon stejnegeri Nishiwaki & Tamiya, 1959 accepted as Mesoplodon carlhubbsi Moore, 1963 (misidentification)
42. Species Mesoplodon thomsoni Ogilby, 1892 accepted as Mesoplodon layardii (Gray, 1865) (synonym)

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