1. Species Nautilus macromphalus G. B. Sowerby II, 1849
2. Species Nautilus pompilius Linnaeus, 1758
3. Species Nautilus samoaensis Barord, Combosch, Giribet, Landman, Lemer, Veloso & Ward, 2023
4. Species Nautilus stenomphalus G. B. Sowerby II, 1849
5. Species Nautilus vanuatuensis Barord, Combosch, Giribet, Landman, Lemer, Veloso & Ward, 2023
6. Species Nautilus vitiensis Barord, Combosch, Giribet, Landman, Lemer, Veloso & Ward, 2023
7. Species Nautilus acicularis Batsch, 1791 accepted as Monalysidium acicularis (Batsch, 1791) accepted as Monalysidium aciculare (Batsch, 1791) (unaccepted > superseded combination, foraminifer erroneously described in a mollusc genus)
8. Species Nautilus acutauricularis Fichtel & Moll, 1798 accepted as Lenticulina acutauricularis (Fichtel & Moll, 1798)
9. Species Nautilus aduncus Fichtel & Moll, 1798 accepted as Orbiculina adunca (Fichtel & Moll, 1798) accepted as Archaias angulatus (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
10. Species Nautilus ambiguus Fichtel & Moll, 1798 accepted as Dendritina ambigua (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
11. Species Nautilus ammonoides Gronovius, 1781 accepted as Operculina ammonoides (Gronovius, 1781) (foraminifer erroneously described in a mollusc genus)
12. Species Nautilus angulatus Fichtel & Moll, 1798 accepted as Archaias angulatus (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
13. Species Nautilus arietinus Batsch, 1791 accepted as Coscinospira arietina (Batsch, 1791) accepted as Peneroplis arietinus (Batsch, 1791) (foraminifer erroneously described in a mollusc genus)
14. Species Nautilus asterizans Fichtel & Moll, 1798 accepted as Hanzawaia asterizans (Fichtel & Moll, 1798) accepted as Riminopsis asterizans (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
15. Species Nautilus auricula Fichtel & Moll, 1798 accepted as Cancris auricula (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
16. Species Nautilus balthicus Schröter, 1791 accepted as Hyalinea balthica (Schröter, 1783) (Not a mollusc but a foraminifer)
17. Species Nautilus balthicus Schröter, 1783 accepted as Hyalinea balthica (Schröter, 1783) (foraminifer erroneously described in a mollusc genus Type species of Hyalinea)
18. Species Nautilus beccarii Linnaeus, 1758 accepted as Ammonia beccarii (Linnaeus, 1758) (foraminifer erroneously described in a mollusc genus)
19. Species Nautilus calcar Linnaeus, 1758 accepted as Lenticulina calcar (Linnaeus, 1758) (foraminifer erroneously described in a mollusc genus)
20. Species Nautilus cassis Fichtel & Moll, 1798 accepted as Lenticulina cassis (Fichtel & Moll, 1798) accepted as Planularia cassis (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
21. Species Nautilus comptoni J. Sowerby, 1818 accepted as Lenticulina comptoni (Sowerby, 1818) accepted as Lenticulina rotulata (Lamarck, 1804) (foraminifer erroneously described in a mollusc genus)
22. Species Nautilus conico-articulata Batsch, 1791 accepted as Articulina conicoarticulata (Batsch, 1791) (foraminifer erroneously described in a mollusc genus)
23. Species Nautilus costatus Fichtel & Moll, 1798 accepted as Lenticulina costata (Fichtel & Moll, 1798) accepted as Spincterules costatus (Fichtel & Moll, 1798) accepted as Spincterules anaglyptus Loeblich & Tappan, 1987 (foraminifer erroneously described in a mollusc genus)
24. Species Nautilus costatus Montagu, 1803 accepted as Nodosaria costata (Montagu, 1803) accepted as Pyramidulina raphanus (Linnaeus, 1758) (Not a mollusc but a foraminifer)
25. Species Nautilus crassulum G. Walker & Jacob, 1798 accepted as Nonion crassulum (Walker & Jacob, 1798) (foraminifer erroneously described in a mollusc genus)
26. Species Nautilus crassulus Fichtel & Moll, 1798 accepted as Nonion crassulum (Walker & Jacob, 1798) (foraminifer erroneously described in a mollusc genus)
27. Species Nautilus crassulus G. Walker & Jacob, 1798 accepted as Nonion crassulum (Walker & Jacob, 1798)
28. Species Nautilus craticulatus Fichtel & Moll, 1798 accepted as Elphidium craticulatum (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
29. Species Nautilus crepidula Fichtel & Moll, 1798 accepted as Astacolus crepidulus (Fichtel & Moll, 1798) accepted as Astacolus crepidula (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
30. Species Nautilus crispus Linnaeus, 1758 accepted as Elphidium crispum (Linnaeus, 1758) (foraminifer erroneously described in a mollusc genus)
31. Species Nautilus depressulus G. Walker & Jacob, 1798 accepted as Haynesina depressula (Walker & Jacob, 1798) (foraminifer erroneously described in a mollusc genus)
32. Species Nautilus faba Fichtel & Moll, 1798 accepted as Nonion fabum (Fichtel & Moll, 1798) accepted as Nonion faba (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
33. Species Nautilus farctus Fichtel & Moll, 1798 accepted as Cibicides farctus (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
34. Species Nautilus galea Fichtel & Moll, 1798 accepted as Planularia cassis (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
35. Species Nautilus incrassatus Fichtel & Moll, 1798 accepted as Anomalinoides incrassatus (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
36. Species Nautilus inflatus Montagu, 1808 accepted as Trochammina inflata (Montagu, 1808) (foraminifer erroneously described in a mollusc genus Type species of Trochammina)
37. Species Nautilus jugosus Montagu, 1803 accepted as Pyramidulina jugosa (Montagu, 1803) (foraminifer erroneously described in a mollusc genus)
38. Species Nautilus laevigatulus G. Walker & Jacob, 1798 accepted as Lenticulina laevigatula (Walker & Jacob, 1798) (foraminifer erroneously described in a mollusc genus)
39. Species Nautilus legumen Linnaeus, 1758 accepted as Vaginulina legumen (Linnaeus, 1758) (foraminifer erroneously described in a mollusc genus)
40. Species Nautilus linearis Montagu, 1808 accepted as Vaginulina linearis (Montagu, 1808) (foraminifer erroneously described in a mollusc genus)
41. Species Nautilus lituus Gmelin, 1791 accepted as Monalysidium lituus (Gmelin, 1791) (foraminifer erroneously described in a mollusc genus)
42. Species Nautilus lobatulus G. Walker & Jacob, 1798 accepted as Lobatula lobatula (Walker & Jacob, 1798) (foraminifer erroneously described in a mollusc genus)
43. Species Nautilus macellum Fichtel & Moll, 1798 accepted as Elphidium macellum (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
44. Species Nautilus macellus Fichtel & Moll, 1798 accepted as Elphidium macellum (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
45. Species Nautilus mammilla Fichtel & Moll, 1798 accepted as Amphistegina mammilla (Fichtel & Moll, 1798) † (foraminifer erroneously described in a mollusc genus)
46. Species Nautilus obliquus Linnaeus, 1758 accepted as Dentalina obliqua (Linnaeus, 1758) (Opinion of Eiland and Gudmundsson (2004))
47. Species Nautilus orbiculus Forsskål, 1775 accepted as Sorites orbiculus (Forsskål in Niebuhr, 1775) (foraminifer erroneously described in a mollusc genus)
48. Species Nautilus papillosus Fichtel & Moll, 1798 accepted as Lenticulina papillosa (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
49. Species Nautilus perforatus Conrad, 1849 accepted as Allonautilus perforatus (Conrad, 1849) (unaccepted > superseded combination)
50. Species Nautilus pertusus Forsskål, 1775 accepted as Peneroplis pertusus (Forsskål in Niebuhr, 1775) (foraminifer erroneously described in a mollusc genus)
51. Species Nautilus planatus Fichtel & Moll, 1798 accepted as Peneroplis planatus (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus. Type species of Peneroplis)
52. Species Nautilus pompilioides Fichtel & Moll, 1798 accepted as Nonion pompilioides (Fichtel & Moll, 1798) accepted as Melonis pompilioides (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
53. Species Nautilus radiatus Fichtel & Moll, 1798 accepted as Amphistegina radiata (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
54. Species Nautilus radicula Linnaeus, 1758 accepted as Nodosaria radicula (Linnaeus, 1758) (foraminifer erroneously described in a mollusc genus)
55. Species Nautilus raphanistrum Linnaeus, 1758 accepted as Pyramidulina raphanistrum (Linnaeus, 1758) (foraminifer erroneously described in a mollusc genus)
56. Species Nautilus raphanus Linnaeus, 1758 accepted as Pyramidulina raphanus (Linnaeus, 1758) (foraminifer erroneously described in a mollusc genus)
57. Species Nautilus repandus Fichtel & Moll, 1798 accepted as Eponides repandus (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
58. Species Nautilus scapha Fichtel & Moll, 1798 accepted as Nonion commune (d'Orbigny, 1846) (unaccepted > junior homonym, foraminifer erroneously described in a mollusc genus. Primary junior homonym of Nautilus scapha de Wulfen, 1791. Subjective senior synonym Opinion of Rögl and Hansen (1984))
59. Species Nautilus scrobiculatus [Lightfoot], 1786 accepted as Allonautilus scrobiculatus ([Lightfoot], 1786) (original combination)
60. Species Nautilus semilituus Linnaeus, 1758 accepted as Spirolina semilituus (Linnaeus, 1758) (foraminifer erroneously described in a mollusc genus)
61. Species Nautilus sinuatus Fichtel & Moll, 1798 accepted as Anomalinoides sinuatus (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
62. Species Nautilus spengleri Gmelin, 1791 accepted as Calcarina spengleri (Gmelin, 1791) (foraminifer erroneously described in a mollusc genus)
63. Species Nautilus spinulosus Montagu, 1808 accepted as Nodosaria spinulosa (Montagu, 1808) (foraminifer erroneously described in a mollusc genus)
64. Species Nautilus spirula Linnaeus, 1758 accepted as Spirula spirula (Linnaeus, 1758) (original combination)
65. Species Nautilus striatopunctatus Fichtel & Moll, 1798 accepted as Elphidium striatopunctatum (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
66. Species Nautilus strigilatus Fichtel & Moll, 1798 accepted as Elphidium strigilatum (Fichtel & Moll, 1798) (originally described in molluscan genus)
67. Species Nautilus subarcuatulus G. Walker & Jacob, 1798 accepted as Astacolus subarcuatulus (Walker & Jacob, 1798) (foraminifer erroneously described in a mollusc genus)
68. Species Nautilus subarcuatus Montagu, 1803 accepted as Dentalina subarcuata (Montagu, 1803) (foraminifer erroneously described in a mollusc genus)
69. Species Nautilus tuberosus Fichtel & Moll, 1798 accepted as Lobatula lobatula (Walker & Jacob, 1798) (foraminifer erroneously described in a mollusc genus)
70. Species Nautilus umbilicatulus G. Walker & Jacob, 1798 accepted as Melonis umbilicatulus (Walker & Jacob, 1798) accepted as Nonion umbilicatulum (Walker & Jacob, 1798) (foraminifer erroneously described in a mollusc genus)
71. Species Nautilus unguiculatus Gmelin, 1791 accepted as Calcarina spengleri (Gmelin, 1791) (foraminifer erroneously described in a mollusc genus)
72. Species Nautilus venosus Fichtel & Moll, 1798 accepted as Operculinella venosa (Fichtel & Moll, 1798) accepted as Nummulites venosus (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
73. Species Nautilus vortex Fichtel & Moll, 1798 accepted as Lenticulina vortex (Fichtel & Moll, 1798) (foraminifer erroneously described in a mollusc genus)
74. Species Nautilus acicula de Wulfen, 1791 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
75. Species Nautilus alumnus Iredale, 1944 (uncertain > nomen dubium)
76. Species Nautilus belauensis Saunders, 1981 (uncertain > taxon inquirendum)
77. Species Nautilus bicarinatus Montagu, 1808 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
78. Species Nautilus carinatulus G. Walker & Jacob, 1798 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
79. Species Nautilus dissimilis W. Turton, 1819 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
80. Species Nautilus entrochus Schroeder, 1803 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
81. Species Nautilus fascia Linnaeus, 1758 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
82. Species Nautilus granum Linnaeus, 1758 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
83. Species Nautilus helicites Gmelin, 1791 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
84. Species Nautilus inaequalis Gmelin, 1791 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
85. Species Nautilus littoreus de Wulfen, 1791 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
86. Species Nautilus major Forsskål, 1775 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
87. Species Nautilus marisrubri Schröter, 1803 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
88. Species Nautilus navicularis de Wulfen, 1791 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
89. Species Nautilus orthoceratites Schröter, 1803 (uncertain > nomen dubium, Foraminifer erroneously described in a mollusc genus Never figured+Depository not given)
90. Species Nautilus planci de Wulfen, 1791 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
91. Species Nautilus rectus Montagu, 1803 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
92. Species Nautilus repertus Iredale, 1944 (uncertain > taxon inquirendum)
93. Species Nautilus rotatus Maton & Rackett, 1807 (uncertain > taxon inquirendum)
94. Species Nautilus rugosus Linnaeus, 1767 (uncertain > taxon inquirendum)
95. Species Nautilus scapha de Wulfen, 1791 (uncertain > nomen dubium, no type figure+depository not given = Nomen dubium, foraminifer erroneously described in a mollusc genus Senior homonym of Nautilus scapha Fichtel & Moll, 1798)
96. Species Nautilus sceptrum Schroeder, 1803 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
97. Species Nautilus sertum de Wulfen, 1791 (uncertain > nomen dubium, no type figure+depository not given = Nomen dubium, foraminifer erroneously described in a mollusc genus)
98. Species Nautilus striatulus Schroeder, 1803 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)
99. Species Nautilus umbilicatus Linnaeus, 1758 (uncertain > taxon inquirendum, foraminifer erroneously described in a mollusc genus)

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