1. Species Crenella arenaria Monterosato, 1875
2. Species Crenella caudiva Olsson, 1961
3. Species Crenella cucullata Deshayes, 1858 †
4. Species Crenella decussata (Montagu, 1808)
5. Species Crenella divaricata (A. d'Orbigny, 1853)
6. Species Crenella elegans Deshayes, 1858 †
7. Species Crenella gemma Olsson & McGinty, 1958
8. Species Crenella globularis Tate, 1886 †
9. Species Crenella magellanica K. Linse, 2002
10. Species Crenella marionensis E. A. Smith, 1885
11. Species Crenella minuta Thiele, 1931
12. Species Crenella nisigotoensis Nomura & Hatai, 1936 †
13. Species Crenella pellucida (Jeffreys, 1859)
14. Species Crenella pura E. A. Smith, 1890
15. Species Crenella striatina Deshayes, 1858 †
16. Subgenus Crenella (Hippagus) I. Lea, 1833 accepted as Crenella T. Brown, 1827 (unaccepted > junior subjective synonym)
    1. Species Crenella (Hippagus) cucullata Deshayes, 1858 † accepted as Crenella cucullata Deshayes, 1858 † (unaccepted > superseded combination)
17. Subgenus Crenella (Megacrenella) Habe & Ki. Ito, 1965 accepted as Solamen Iredale, 1924 (unaccepted > junior subjective synonym)
18. Subgenus Crenella (Modiolaria) Beck, 1838 accepted as Musculus Röding, 1798 (unaccepted > junior subjective synonym)
    1. Species Crenella (Modiolaria) adolphi Dunker, 1871 accepted as Musculus nana (Dunker, 1857) (unaccepted > junior subjective synonym)
    2. Species Crenella (Modiolaria) multistriata E. A. Smith, 1872 accepted as Gregariella multistriata (E. A. Smith, 1872) (basionym)
    3. Species Crenella (Modiolaria) viridula H. Adams, 1871 accepted as Musculus viridulus (H. Adams, 1871) (unaccepted > superseded combination)
19. Subgenus Crenella (Stalagmium) Conrad, 1833 † accepted as Crenella T. Brown, 1827 (unaccepted > junior subjective synonym)
    1. Species Crenella (Stalagmium) serica Conrad, 1860 † (uncertain > unassessed)
20. Species Crenella abbotti van Regteren Altena, 1968 accepted as Crenella gemma Olsson & McGinty, 1958
21. Species Crenella adamsiana Melvill & Standen, 1907 accepted as Solamen persicum (E. A. Smith, 1906)
22. Species Crenella adolphi Dunker, 1871 accepted as Musculus nana (Dunker, 1857) (unaccepted > junior subjective synonym)
23. Species Crenella alfredensis Bartsch, 1915 accepted as Solamen striatissimum (G. B. Sowerby III, 1904)
24. Species Crenella australis E. von Martens, 1879 accepted as Gregariella australis (E. von Martens, 1879) (unaccepted > superseded combination)
25. Species Crenella bulla Dunker, 1857 accepted as Solamen bulla (Dunker, 1857)
26. Species Crenella canariensis Odhner, 1932 accepted as Rhomboidella canariensis (Odhner, 1932) (original combination)
27. Species Crenella coarctata P. P. Carpenter, 1857 accepted as Gregariella coarctata (P. P. Carpenter, 1857) (original combination)
28. Species Crenella columbiana Dall, 1897 accepted as Solamen columbianum (Dall, 1897) (original combination)
29. Species Crenella compta H. Adams, 1871 accepted as Rhomboidella vaillanti (Issel, 1869) (junior synonym)
30. Species Crenella decorata A. Adams, 1862 accepted as Vilasina decorata (A. Adams, 1862)
31. Species Crenella delicatula Yokoyama, 1926 accepted as Crenella decussata (Montagu, 1808)
32. Species Crenella diaphana Dall, 1907 accepted as Solamen spectabile (A. Adams, 1862)
33. Species Crenella divaricata Yokoyama, 1922 accepted as Crenella decussata (Montagu, 1808) (unaccepted > junior subjective synonym, invalid: junior secondary homonym of Crenella divaricata (d'Orbigny, 1853); C. yokoyamai is a replacement name)
34. Species Crenella dollfusi Dautzenberg, 1910 accepted as Solamen dollfusi (Dautzenberg, 1910)
35. Species Crenella ecuadoriana Pilsbry & Olsson, 1941 accepted as Crenella decussata (Montagu, 1808)
36. Species Crenella ehrenbergi Issel, 1869 accepted as Gregariella ehrenbergi (Issel, 1869)
37. Species Crenella elliptica T. Brown, 1827 accepted as Crenella decussata (Montagu, 1808)
38. Species Crenella elongata F. W. Hutton, 1873 † accepted as Musculus elongatus (F. W. Hutton, 1873) † (superseded combination)
39. Species Crenella faba (O. F. Müller, 1776) accepted as Arvella faba (O. F. Müller, 1776) (unaccepted > superseded combination)
40. Species Crenella fragilis A. E. Verrill, 1885 accepted as Solamen glandula (Totten, 1834)
41. Species Crenella gibba H. Adams, 1871 accepted as Rhomboidella vaillanti (Issel, 1869)
42. Species Crenella glandula (Totten, 1834) accepted as Solamen glandula (Totten, 1834)
43. Species Crenella grisea Dall, 1907 accepted as Vilasina seminuda (Dall, 1897)
44. Species Crenella inflata P. P. Carpenter, 1864 accepted as Crenella decussata (Montagu, 1808)
45. Species Crenella japonica Dall, 1897 accepted as Arvella japonica (Dall, 1897)
46. Species Crenella leana Dall, 1897 accepted as Solamen leanum (Dall, 1897)
47. Species Crenella megas Dall, 1902 accepted as Solamen megas (Dall, 1902) (original combination)
48. Species Crenella multistriata E. A. Smith, 1872 accepted as Gregariella multistriata (E. A. Smith, 1872) (original combination)
49. Species Crenella paulucciae Crosse, 1863 accepted as Musculus nana (Dunker, 1857)
50. Species Crenella pectinula (A. Gould, 1841) accepted as Arvella pectinula (A. Gould, 1841) (superseded combination)
51. Species Crenella persica E. A. Smith, 1906 accepted as Solamen persicum (E. A. Smith, 1906) (original combination)
52. Species Crenella persicum [sic] accepted as Crenella persica E. A. Smith, 1906 accepted as Solamen persicum (E. A. Smith, 1906) (incorrect gender ending)
53. Species Crenella praecellens Melvill, 1907 accepted as Rhomboidella vaillanti (Issel, 1869) (unaccepted > junior subjective synonym)
54. Species Crenella prideauxi (Leach, 1815) accepted as Rhomboidella prideauxi (Leach, 1815) (unaccepted > superseded combination)
55. Species Crenella radians (Suter, 1908) accepted as Rhomboidella radians (Suter, 1908) (superseded combination)
56. Species Crenella rhombea (Berkeley, 1827) accepted as Rhomboidella prideauxi (Leach, 1815) (unaccepted > superseded combination, junior synonym)
57. Species Crenella rotundata Dall, 1916 accepted as Vilasina seminuda (Dall, 1897)
58. Species Crenella sinica Z.-R. Wang & Z.-G. Qi, 1984 accepted as Vilasina sinica (Z.-R. Wang & Z.-G. Qi, 1984) (superseded combination)
59. Species Crenella skomma (R. A. McLean & Schwengel, 1944) accepted as Gregariella chenui (Récluz, 1842)
60. Species Crenella spectabilis A. Adams, 1862 accepted as Solamen spectabile (A. Adams, 1862) (unaccepted > superseded combination)
61. Species Crenella striatissima G. B. Sowerby III, 1904 accepted as Solamen striatissimum (G. B. Sowerby III, 1904)
62. Species Crenella tamurai Habe, 1955 accepted as Solamen columbianum (Dall, 1897)
63. Species Crenella translucida Gabb, 1881 accepted as Musculus lateralis (Say, 1822)
64. Species Crenella vaillanti Issel, 1869 accepted as Rhomboidella vaillanti (Issel, 1869)
65. Species Crenella vaillanti Issel, 1869, sensu Nicklès, 1955 accepted as Rhomboidella obesa Ockelmann, 1983 (misapplication)
66. Species Crenella viator (A. Orbigny, 1846) accepted as Musculus viator (A. d'Orbigny, 1846) (unaccepted > superseded combination)
67. Species Crenella viridula H. Adams, 1871 accepted as Musculus viridulus (H. Adams, 1871)
68. Species Crenella yokoyamai Nomura, 1932 accepted as Crenella decussata (Montagu, 1808)
69. Species Crenella casta A. Adams, 1862 (uncertain > nomen dubium)
70. Species Crenella cornea A. Adams, 1862 (uncertain > nomen dubium)
71. Species Crenella crocea A. Adams, 1862 (uncertain > nomen dubium)
72. Species Crenella duplinensis Dall, 1898 † (uncertain > unassessed)
73. Species Crenella porterensis C. E. Weaver, 1916 † (uncertain > unassessed)
74. Species Crenella sculptilis A. Adams, 1862 (uncertain > nomen dubium)
75. Species Crenella washingtonensis C. E. Weaver, 1916 † (uncertain > unassessed)

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