1. Species Sphenia acuta Staadt, 1913 †
2. Species Sphenia aequilateralis Deshayes, 1857 †
3. Species Sphenia anatina (Basterot, 1825) †
4. Species Sphenia angulata Deshayes, 1856 †
5. Species Sphenia angusta Deshayes, 1857 †
6. Species Sphenia binghami W. Turton, 1822
7. Species Sphenia coreanica Habe, 1951
8. Species Sphenia cuneiformis Deshayes, 1857 †
9. Species Sphenia cyrenoides Cossmann, 1886 †
10. Species Sphenia donaciformis Deshayes, 1857 †
11. Species Sphenia elongata J.-L. Zhang, F.-S. Xu & J.-Y. Liu, 2012
12. Species Sphenia fragilis (H. Adams & A. Adams, 1854)
13. Species Sphenia gulfensis Coan, 1999
14. Species Sphenia hatcheri Pilsbry, 1899
15. Species Sphenia leptomorpha Cossmann, 1892 †
16. Species Sphenia luticola (Valenciennes, 1846)
17. Species Sphenia marci Koperberg, 1931 †
18. Species Sphenia myalis Deshayes, 1857 †
19. Species Sphenia nana (Davitashvili & Kharatishvili, 1945) †
20. Species Sphenia natalensis E. A. Smith, 1910
21. Species Sphenia nitens Bayan, 1873 †
22. Species Sphenia passyana Deshayes, 1857 †
23. Species Sphenia perversa Blanford, 1867
24. Species Sphenia pholadum P. Oppenheim, 1906 †
25. Species Sphenia praepusilla Harzhauser, Mandic, Büyükmeriç, Neubauer, Kadolsky & Landau, 2016 †
26. Species Sphenia radiatula Cossmann, 1882 †
27. Species Sphenia resecta Cossmann, 1886 †
28. Species Sphenia rostrata (Lamarck, 1806) †
29. Species Sphenia rueppellii A. Adams, 1851
30. Species Sphenia ruhoffae Le Renard, 1994 †
31. Species Sphenia sincera Hanks & Packer, 1985
32. Species Sphenia tellina O. Boettger, 1880 †
33. Species Sphenia terquemi Deshayes, 1857 †
34. Species Sphenia truncata Deshayes, 1856 †
35. Species Sphenia tumida J. E. Lewis, 1968
36. Species Sphenia alternata A. d'Orbigny, 1853 accepted as Cardiomya alternata (A. d'Orbigny, 1853) (original combination)
37. Species Sphenia angulata S. V. Wood, 1840 accepted as Basterotina angulata (S. V. Wood, 1857) (unaccepted > nomen nudum)
38. Species Sphenia angulata S. V. Wood, 1857 accepted as Basterotina angulata (S. V. Wood, 1857) (original combination)
39. Species Sphenia antillensis Dall & C. T. Simpson, 1901 accepted as Sphenia fragilis (H. Adams & A. Adams, 1854)
40. Species Sphenia arcuata Deshayes, 1857 † accepted as Hindsiella arcuata (Deshayes, 1857) † (unaccepted > superseded combination)
41. Species Sphenia bilirata Gabb, 1861 accepted as Hiatella arctica (Linnaeus, 1767)
42. Species Sphenia californica Conrad, 1837 accepted as Cryptomya californica (Conrad, 1837) (unaccepted > superseded combination)
43. Species Sphenia cimmeria (Andrusov, 1890) † accepted as Sphenia anatina cimmeria (Andrusov, 1890) † (unaccepted > superseded combination)
44. Species Sphenia cleryana A. d'Orbigny, 1846 accepted as Cardiomya cleryana (A. d'Orbigny, 1846) (original combination)
45. Species Sphenia decurtata A. Adams, 1851 accepted as Tugonia decurtata (A. Adams, 1851) (superseded combination)
46. Species Sphenia elliptica A. Adams, 1851 accepted as Cryptomya elliptica (A. Adams, 1851) (original combination)
47. Species Sphenia globula Dall, 1919 accepted as Sphenia luticola (Valenciennes, 1846)
48. Species Sphenia inaequalis E. A. Smith, 1893 accepted as Sphenia perversa Blanford, 1867
49. Species Sphenia ornatissima A. d'Orbigny, 1853 accepted as Cardiomya ornatissima (A. d'Orbigny, 1853) (unaccepted > superseded combination)
50. Species Sphenia ovoidea P. P. Carpenter, 1865 accepted as Mya arenaria Linnaeus, 1758 (unaccepted > junior subjective synonym)
51. Species Sphenia pacifica Crosse, 1868 accepted as Sphenia pacificiensis de Folin, 1867 accepted as Sphenia fragilis (H. Adams & A. Adams, 1854) (unaccepted > unjustified emendation)
52. Species Sphenia pacificiensis de Folin, 1867 accepted as Sphenia fragilis (H. Adams & A. Adams, 1854)
53. Species Sphenia philippinarum A. Adams, 1851 accepted as Cryptomya philippinarum (A. Adams, 1851)
54. Species Sphenia pholadidea Dall, 1916 accepted as Sphenia luticola (Valenciennes, 1846)
55. Species Sphenia princeps A. Adams, 1851 accepted as Cryptomya princeps (A. Adams, 1851) (unaccepted > superseded combination)
56. Species Sphenia quadrangularis Lynge, 1909 accepted as Aenictomya quadrangularis (Lynge, 1909)
57. Species Sphenia rietensis W. H. Turton, 1932 accepted as Sphenia natalensis E. A. Smith, 1910 (junior synonym)
58. Species Sphenia rugosula Deshayes, 1857 † accepted as Anisodonta rugosula (Deshayes, 1857) † (unaccepted > superseded combination)
59. Species Sphenia similis E. A. Smith, 1893 accepted as Sphenia sowerbyi E. A. Smith, 1893 accepted as Indosphenia sowerbyi (E. A. Smith, 1893)
60. Species Sphenia sowerbyi E. A. Smith, 1893 accepted as Indosphenia sowerbyi (E. A. Smith, 1893)
61. Species Sphenia subequalis Dall, 1908 accepted as Sphenia hatcheri Pilsbry, 1899
62. Species Sphenia swainsoni W. Turton, 1822 accepted as Mya truncata Linnaeus, 1758
63. Species Sphenia trunculus Dall, 1916 accepted as Sphenia fragilis (H. Adams & A. Adams, 1854) (junior subjective synonym)
64. Species Sphenia paulina Mayer, 1861 † (uncertain > unassessed)

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