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Mollusca (132 791)
Subphylum Aculifera
Subphylum Conchifera
Subphylum Placophora accepted as Polyplacophora
Superclass Aplacophora
Class Amphineura accepted as Aculifera
Class Bivalvia (25 009)
Class Caudofoveata (143)
Class Cephalopoda (1 834)
Class Conchifera accepted as Bivalvia
Class Cricoconarida † (1)
Class Gastropoda (102 697)
Subclass Amphigastropoda † (390)
Subclass Angiogastropoda represented as Gastropoda
Subclass Apogastropoda
Subclass Caenogastropoda (53 636)
Subclass Gastropoda incertae sedis (308)
Subclass Heterobranchia (39 156)
Infraclass "Lower Heterobranchia" (1 137)
Infraclass Euthyneura (37 433)
Subterclass Acteonimorpha (411)
Subterclass Ringipleura (2 917)
Subterclass Tectipleura (34 105)
Superorder Acochlidiimorpha (48)
Superorder Ascoglossa accepted as Sacoglossa
Superorder Basommatophora accepted as Hygrophila
Superorder Eupulmonata (25 569)
Order Aillyida accepted as Achatinina
Order Ellobiida (579)
Order Gymnomorpha accepted as Systellommatophora
Order Stylommatophora (24 766)
Suborder Achatinina (2 900)
Suborder Elasmognatha accepted as Succineoidei
Suborder Helicina (21 626)
Infraorder Arionoidei (140)
Infraorder Clausilioidei (1 859)
Infraorder Helicina incertae sedis (3 210)
Infraorder Helicoidei (5 690)
Infraorder Limacoidei (4 251)
Superfamily Dyakioidea Gude & B. B. Woodward, 1921 accepted as Trochomorphoidea Mörch, 1864
Superfamily Gastrodontoidea Tryon, 1866 (621)
Superfamily Helicarionoidea Bourguignat, 1877 (1 862)
Family Ariophantidae Godwin-Austen, 1883 (739)
Subfamily Ariophantinae Godwin-Austen, 1883 (218)
Genus Ariophanta Des Moulins, 1829 (26)
Genus Bapuia Godwin-Austen, 1918 (1)
Genus Corneoxesta Iredale, 1941 accepted as Xesta Albers, 1850
Genus Cryptogirasia T. D. A. Cockerell, 1891 (1)
Genus Cryptosoma Theobald, 1857 accepted as Megaustenia T. D. A. Cockerell, 1913
Genus Cryptozona Mörch, 1872 (11)
Genus Dalingia Godwin-Austen, 1907 (1)
Genus Dihangia Godwin-Austen, 1916 (1)
Genus Euplecta C. Semper, 1870 (46)
Genus Euplectella Jousseaume, 1894 accepted as Ariophanta (Celectella) Schileyko, 2002
Genus Galongia Godwin-Austen, 1916 (1)
Genus Hemiplecta Albers, 1850 (66)
Genus Indrella Godwin-Austen, 1901 (2)
Genus Janbinmorpha Pholyotha & Panha, 2024 (1)
Genus Khasiella Godwin-Austen, 1899 (11)
Genus Koratia Godwin-Austen, 1919 accepted as Hemiplecta Albers, 1850
Genus Mariaella J. E. Gray, 1855 (2)
Genus Mariella [sic] accepted as Mariaella J. E. Gray, 1855
Genus Megaustenia T. D. A. Cockerell, 1913 (17)
Genus Nanina J. E. Gray, 1834 accepted as Xesta Albers, 1850
Subgenus Nanina (Acusta) E. von Martens, 1860 accepted as Acusta E. von Martens, 1860
Subgenus Nanina (Ariophanta) Des Moulins, 1829 accepted as Ariophanta Des Moulins, 1829
Subgenus Nanina (Bensonia) L. Pfeiffer, 1855 accepted as Bensonies H. B. Baker, 1938
Subgenus Nanina (Cryptozona) Mörch, 1872 accepted as Cryptozona Mörch, 1872
Subgenus Nanina (Discus) Fitzinger, 1833 accepted as Discus Fitzinger, 1833
Subgenus Nanina (Durgella) W. T. Blanford, 1863 accepted as Durgella W. T. Blanford, 1863
Subgenus Nanina (Epiglypta) Pilsbry, 1893 accepted as Epiglypta Pilsbry, 1893
Subgenus Nanina (Euplecta) C. Semper, 1870 accepted as Euplecta C. Semper, 1870
Subgenus Nanina (Hemiglypta) Möllendorff, 1893 accepted as Hemiglypta Möllendorff, 1893
Subgenus Nanina (Hemiplecta) Albers, 1850 accepted as Hemiplecta Albers, 1850
Subgenus Nanina (Kaliella) W. T. Blanford, 1863 accepted as Kaliella W. T. Blanford, 1863
Subgenus Nanina (Lamprocystis) Pfeffer, 1883 accepted as Lamprocystis Pfeffer, 1883
Subgenus Nanina (Liocystis) Mörch, 1872 accepted as Sitala H. Adams, 1865
Subgenus Nanina (Macrochlamys) W. H. Benson, 1836 accepted as Macrochlamys W. H. Benson, 1836
Species Nanina (Macrochlamys) auriettae Tapparone Canefri, 1889 accepted as Hemiplecta auriettae (Tapparone Canefri, 1889)
Species Nanina (Macrochlamys) bocourti (Morelet, 1875) accepted as Sarika bocourti (Morelet, 1875)
Species Nanina (Macrochlamys) compluvialis Blanford, 1865 accepted as Taphrospira compluvialis (Blanford, 1865)
Species Nanina (Macrochlamys) diadema Dall, 1897 accepted as Taphrenalla diadema (Dall, 1897)
Species Nanina (Macrochlamys) geoffreyi H. Adams, 1868 accepted as Dupontia proletaria (Morelet, 1860)
Species Nanina (Macrochlamys) hebescens W. T. Blanford, 1866 accepted as Tanychlamys hebescens (W. T. Blanford, 1866)
Species Nanina (Macrochlamys) hypoleuca W. T. Blanford, 1865
Species Nanina (Macrochlamys) infans (Reeve, 1854) represented as Macrochlamys infans (Reeve, 1854)
Species Nanina (Macrochlamys) infausta W. T. Blanford, 1866 accepted as Tanychlamys infausta (W. T. Blanford, 1866)
Species Nanina (Macrochlamys) lixa W. T. Blanford, 1866 accepted as Tanychlamys lixa (W. T. Blanford, 1866)
Species Nanina (Macrochlamys) maillardi (Deshayes, 1863) accepted as Dupontia maillardi (Deshayes, 1863)
Species Nanina (Macrochlamys) nebulosa W. T. Blanford, 1865
Species Nanina (Macrochlamys) nitella (Morelet, 1851) accepted as Dupontia nitella (Morelet, 1851)
Species Nanina (Macrochlamys) poweri H. Adams, 1868 accepted as Dupontia poweri (H. Adams, 1868)
Species Nanina (Macrochlamys) prona G. Nevill, 1878 accepted as Macrochlamys prona (G. Nevill, 1878)
Species Nanina (Macrochlamys) pseudovitrinoides G. Nevill, 1881 accepted as Macrochlamys indica Godwin-Austen, 1883
Species Nanina (Macrochlamys) resplendens (R. A. Philippi, 1847) represented as Sarika resplendens (R. A. Philippi, 1847)
Species Nanina (Macrochlamys) sikrigaliensis G. Nevill, 1878
Species Nanina (Macrochlamys) virginia (Morelet, 1860) accepted as Dupontia virginia (Morelet, 1860)
Subgenus Nanina (Medyla) Albers, 1860 accepted as Vitrinula J. E. Gray, 1857
Subgenus Nanina (Microcystina) Mörch, 1872 accepted as Microcystina Mörch, 1872
Subgenus Nanina (Microcystis) H. Beck, 1837 accepted as Microcystis H. Beck, 1838
Subgenus Nanina (Microcystis) H. Beck, 1838 accepted as Microcystis H. Beck, 1838
Subgenus Nanina (Nanina) Gray, 1834 accepted as Xesta Albers, 1850
Subgenus Nanina (Nigritella) E. von Martens, 1860 accepted as Trochomorpha (Nigritella) E. von Martens, 1860
Subgenus Nanina (Omphaloptyx) O. Boettger, 1875 † accepted as Omphaloptyx O. Boettger, 1875 †
Subgenus Nanina (Orobia) E. von Martens, 1860 accepted as Macrochlamys W. H. Benson, 1836
Subgenus Nanina (Rotula) Albers, 1850 accepted as Rotula Albers, 1850
Subgenus Nanina (Rotularia) Mörch, 1872 accepted as Rotularia Mörch, 1872
Subgenus Nanina (Ryssota) Albers, 1850 accepted as Ryssota Albers, 1850
Subgenus Nanina (Sesara) Albers, 1860 accepted as Sesara Albers, 1860
Subgenus Nanina (Sitala) H. Adams, 1865 accepted as Sitala H. Adams, 1865
Subgenus Nanina (Thalassia) E. von Martens, 1860 accepted as Nitor Gude, 1911
Subgenus Nanina (Thalessa) [sic] accepted as Nitor Gude, 1911
Subgenus Nanina (Thapsia) E. von Martens, 1860 accepted as Thapsia E. von Martens, 1860
Subgenus Nanina (Thysanota) Albers, 1860 accepted as Thysanota Albers, 1860
Subgenus Nanina (Trochomorpha) Albers, 1850 accepted as Trochomorpha Albers, 1850
Subgenus Nanina (Videna) H. Adams & A. Adams, 1855 accepted as Videna H. Adams & A. Adams, 1855
Subgenus Nanina (Xesta) Albers, 1850 accepted as Xesta Albers, 1850
Species Nanina adjicienda Mabille, 1889
Species Nanina afra L. Pfeiffer, 1855 accepted as Trachycystis tollini (W. H. Benson, 1856)
Species Nanina aglaja (Reeve, 1854) accepted as Everettia aglaja (Reeve, 1854)
Species Nanina aglypta Dohrn, 1866 accepted as Principitrochoidea aglypta (Dohrn, 1866)
Species Nanina albersi E. von Martens, 1864 accepted as Dyakia janus (H. Beck, 1837)
Species Nanina albizonata (Dohrn, 1858) accepted as Euplecta albizonata (Dohrn, 1858)
Species Nanina alticola H. Nevill, 1871
Species Nanina amblytropis E. A. Smith, 1895 accepted as Zagmena amblytropis (E. A. Smith, 1895)
Species Nanina amphidroma E. von Martens, 1864 accepted as Dyakia mackensiana (Souleyet, 1841)
Species Nanina anobrachis Dohrn, 1882 accepted as Kalidos anobrachis (Dohrn, 1882)
Species Nanina argentea (Reeve, 1852) accepted as Harmogenanina argentea (Reeve, 1852)
Species Nanina atramentaria Shuttleworth, 1852 accepted as Victaphanta atramentaria (Shuttleworth, 1852)
Species Nanina atropos Tapparone Canefri, 1886
Species Nanina aurea E. von Martens, 1864
Species Nanina austeni W. T. Blanford, 1870 accepted as Khasiella austeni (W. T. Blanford, 1870)
Species Nanina bajadera (L. Pfeiffer, 1846) accepted as Ariophanta ammonia (Deshayes, 1850)
Species Nanina baliensis Mousson, 1857 accepted as Asperitas sparsa (Mousson, 1857)
Species Nanina balstoni (Angas, 1877) accepted as Kalidos balstoni (Angas, 1877)
Species Nanina basalis Dohrn, 1882 accepted as Kaliella barrakporensis (Reeve, 1852)
Species Nanina bataviana (von dem Busch, 1842) accepted as Elaphroconcha bataviana (L. Pfeiffer, 1842)
Species Nanina berlangeri [sic] accepted as Ariophanta belangeri (Deshayes, 1832)
Species Nanina bicarinata (C. Semper, 1870) accepted as Vitrinula bicarinata (C. Semper, 1870)
Species Nanina bicolor L. Pfeiffer, 1841
Species Nanina bimaensis Mousson, 1849 accepted as Asperitas bimaensis (Mousson, 1849)
Species Nanina brookei (A. Adams & Reeve, 1850) accepted as Exrhysota brookei (A. Adams & Reeve, 1850)
Species Nanina bruijnii Tapparone Canefri, 1883 accepted as Expocystis bruijnii (Tapparone Canefri, 1883)
Species Nanina brunnea (Anton, 1839) accepted as Hiona glandula (H. Beck, 1838)
Species Nanina buccata Heude, 1885
Species Nanina butonensis P. Sarasin & F. Sarasin, 1899
Species Nanina cairni E. A. Smith, 1887 accepted as Zagmena cairni (E. A. Smith, 1887)
Species Nanina calculosa (A. Gould, 1852) accepted as Coneuplecta calculosa (A. Gould, 1852)
Species Nanina callifera (L. Pfeiffer, 1850) accepted as Hiona callifera (L. Pfeiffer, 1850)
Species Nanina campylonata Tapparone Canefri, 1883
Species Nanina carphalea Mabille, 1889
Species Nanina casca A. Gould, 1852 accepted as Orpiella scorpio (A. Gould, 1846)
Species Nanina cavicola (Gredler, 1881) accepted as Kaliella cavicola (Gredler, 1881)
Species Nanina celinde J. E. Gray, 1850 accepted as Therasiella celinde (J. E. Gray, 1850)
Species Nanina centralis Mousson, 1849 accepted as Elaphroconcha bataviana (L. Pfeiffer, 1842)
Species Nanina ceraria (W. H. Benson, 1853) accepted as Cryptozona ceraria (W. H. Benson, 1853)
Species Nanina ceratodes (L. Pfeiffer, 1846) accepted as Pseudhelicarion ceratodes (L. Pfeiffer, 1846)
Species Nanina cerea (A. Gould, 1850)
Species Nanina cernica H. Adams, 1868 accepted as Caldwellia cernica (H. Adams, 1868)
Species Nanina ceylanica (L. Pfeiffer, 1850) accepted as Ariophanta bistrialis var. ceylanica (L. Pfeiffer, 1850)
Species Nanina chenui (L. Pfeiffer, 1847) accepted as Cryptozona chenui (L. Pfeiffer, 1847)
Species Nanina cherraensis W. T. Blanford, 1870
Species Nanina cingalensis (W. H. Benson, 1860) accepted as Euplecta semidecussata (Reeve, 1852)
Species Nanina citrina (Linnaeus, 1758) accepted as Xesta citrina (Linnaeus, 1758)
Species Nanina clausa Heude, 1882
Species Nanina clayi (Liardet, 1876) accepted as Liardetia samoensis (Mousson, 1865)
Species Nanina clypeus Mousson, 1857 accepted as Dyakia clypeus (Mousson, 1857)
Species Nanina cochlostyloides Schepman, 1892 accepted as Asperitas bimaensis cochlostyloides (Schepman, 1892)
Species Nanina coffea (L. Pfeiffer, 1855) accepted as Asperitas coffea (L. Pfeiffer, 1855)
Species Nanina comorensis (Morelet, 1881) accepted as Xesta comorensis (Morelet, 1881)
Species Nanina conula (Pease, 1861) accepted as Diastole conula (Pease, 1861)
Species Nanina convexiuscula (L. Pfeiffer, 1855) accepted as Euplecta layardi (Reeve, 1852)
Species Nanina cordemoyi G. Nevill, 1870 accepted as Pilula cordemoyi (G. Nevill, 1870)
Species Nanina corrosa Mousson, 1857 accepted as Hemiplecta humphreysiana (I. Lea, 1840)
Species Nanina cultrata (A. Gould, 1846) accepted as Hiona cultrata (A. Gould, 1846)
Species Nanina cycloidea Albers, 1857
Species Nanina cyix (W. H. Benson, 1860) accepted as Ariophanta bistrialis (H. Beck, 1837)
Species Nanina decrespignyi E. T. Higgins, 1868 accepted as Medyla decrespignyi (E. T. Higgins, 1868)
Species Nanina decussata W. H. Benson, 1836 accepted as Tanychlamys decussata (W. H. Benson, 1836)
Species Nanina delavayana Heude, 1885 accepted as Aegistohadra delavayana (Heude, 1885)
Species Nanina densa (A. Adams & Reeve, 1850) accepted as Hemiplecta densa (A. Adams & Reeve, 1850)
Species Nanina derelicta Heude, 1885
Species Nanina despecta Mabille, 1887 accepted as Macrochlamys despecta (Mabille, 1887)
Species Nanina diplodon (W. H. Benson, 1859) accepted as Sesara diplodon (W. H. Benson, 1859)
Species Nanina distincta (L. Pfeiffer, 1850) accepted as Hemiplecta distincta (L. Pfeiffer, 1850)
Species Nanina distorta Heude, 1885
Species Nanina divisa (Forbes, 1851) accepted as Zagmena divisa (Forbes, 1851)
Species Nanina doriae Tapparone Canefri, 1880 accepted as Hemiplecta doriae (Tapparone Canefri, 1880)
Species Nanina dvitija O. Semper, 1866 accepted as Ryssota dvitija (O. Semper, 1866)
Species Nanina eastlakeana Möllendorff, 1883 accepted as Euplecta eastlakeana (Möllendorff, 1883)
Species Nanina egbertae E. von Martens, 1883 accepted as Zagmena egbertae (E. von Martens, 1883)
Species Nanina ekongensis (Angas, 1877) accepted as Kalidos ekongensis (Angas, 1877)
Species Nanina emiliana (Reeve, 1852) accepted as Euplecta emiliana (Reeve, 1852)
Species Nanina ensifera (Mousson, 1869) accepted as Lamprocystis ensifera (Mousson, 1869)
Species Nanina eos Dohrn, 1882 accepted as Kalidos eos (Dohrn, 1882)
Species Nanina erigone J. E. Gray, 1850 accepted as Phrixgnathus erigone (J. E. Gray, 1850)
Species Nanina erratica Heude, 1882 accepted as Cryptozona erratica (Heude, 1882)
Species Nanina eucharis (Deshayes, 1850) accepted as Kalidos eucharis (Deshayes, 1850)
Species Nanina eurydice Oppenheim, 1890 † accepted as Dentellocaracolus antigone (Oppenheim, 1890) †
Species Nanina exaequata (A. Gould, 1846) accepted as Hiona exaequata (A. Gould, 1846)
Species Nanina excavata (W. T. Blanford, 1904) accepted as Taphrospira excavata W. T. Blanford, 1904
Species Nanina excepta Mabille, 1887 accepted as Tanychlamys excepta (Mabille, 1887)
Species Nanina excrescens Mousson, 1870 accepted as Lamprocystis excrescens (Mousson, 1870)
Species Nanina falcata W. T. Blanford, 1870 accepted as Khasiella falcata (W. T. Blanford, 1870)
Species Nanina fargesiana Heude, 1885 accepted as Tanychlamys fargesiana (Heude, 1885)
Species Nanina fellea Heude, 1888
Species Nanina fidelis Fulton, 1896
Species Nanina firmostyla Mousson, 1865 accepted as Lamprocystis firmostyla (Mousson, 1865)
Species Nanina flavopurpurea Heude, 1885
Species Nanina floresiana E. von Martens, 1891 accepted as Elaphroconcha floresiana (E. von Martens, 1891)
Species Nanina fragilis T. Hutton, 1838 accepted as Tanychlamys fragilis (T. Hutton, 1838)
Species Nanina fragillima Mousson, 1870 accepted as Orpiella fragillima (Mousson, 1870)
Species Nanina fraudulenta E. A. Smith, 1887 accepted as Xesta fraudulenta (E. A. Smith, 1887)
Species Nanina fricta A. Gould, 1852 accepted as Austrorhytida capillacea (A. Férussac, 1832)
Species Nanina fruhstorferi E. von Martens, 1896 accepted as Elaphroconcha fruhstorferi (E. von Martens, 1896)
Species Nanina fuchsiana Heude, 1882 accepted as Cryptozona fuchsiana (Heude, 1882)
Species Nanina fulvizona E. von Martens, 1867 accepted as Xesta fulvizona (E. von Martens, 1867)
Species Nanina fuscoluteus (Grateloup, 1840) accepted as Kalidos fuscoluteus (Grateloup, 1840)
Species Nanina futunaensis Mousson, 1871 accepted as Lamprocystis ensifera (Mousson, 1869)
Species Nanina ganoma (Reeve, 1854) accepted as Cryptozona juliana (Gray, 1834)
Species Nanina gardeneri (L. Pfeiffer, 1848) accepted as Euplecta gardeneri (L. Pfeiffer, 1848)
Species Nanina gardneri H. Nevill, 1871 accepted as Nanina gardeneri (L. Pfeiffer, 1848)
Species Nanina godeffroyana Garrett, 1872 accepted as Irenella godeffroyana (Garrett, 1872)
Species Nanina gummata (G. B. Sowerby I, 1841) accepted as Hemitrichia (Atrichoconcha) gummata (G. B. Sowerby I, 1841)
Species Nanina hageni E. Weber, 1906 accepted as Elaphroconcha hageni (E. Weber, 1906)
Species Nanina halata Mousson, 1849 accepted as Asperitas trochus (O. F. Müller, 1774)
Species Nanina hellvillensis Crosse & P. Fischer, 1889
Species Nanina helvillensis accepted as Nanina hellvillensis Crosse & P. Fischer, 1889
Species Nanina herklotsiana Dohrn, 1860
Species Nanina hestia Dohrn, 1882 accepted as Sitala hestia (Dohrn, 1882)
Species Nanina hildebrandti Dohrn, 1882 accepted as Kalidos hildebrandti (Dohrn, 1882)
Species Nanina hoodjonensis E. A. Smith, 1887 accepted as Ariophanta (Hemiplecta) hoodjonensis (E. A. Smith, 1887)
Species Nanina hoyti Garrett, 1872 accepted as Irenella hoyti (Garrett, 1872)
Species Nanina humphreysiana (I. Lea, 1840) accepted as Hemiplecta humphreysiana (I. Lea, 1840)
Species Nanina hunsteini E. A. Smith, 1887 accepted as Amenixesta hunsteini (E. A. Smith, 1887)
Species Nanina hyalina E. von Martens, 1864
Species Nanina hypochlora Melvill & Ponsonby, 1892 accepted as Sheldonia capsula (W. H. Benson, 1864)
Species Nanina ignescens (L. Pfeiffer, 1861)
Species Nanina implicata G. Nevill, 1870 accepted as Harmogenanina implicata (G. Nevill, 1870)
Species Nanina incitata Mabille, 1889
Species Nanina indurata Heude, 1886
Species Nanina infantilis (Gredler, 1881) accepted as Chalepotaxis infantilis (Gredler, 1881)
Species Nanina infelix E. A. Smith, 1893 accepted as Zagmena infelix (E. A. Smith, 1893)
Species Nanina infima Mabille, 1887 accepted as Microcystina infima (Mabille, 1887)
Species Nanina intricata (Noulet, 1854) † accepted as Palaeoxestina serpentinites (Boubée, 1831) †
Species Nanina isabellina (Reeve, 1854) accepted as Euplecta isabellina (Reeve, 1854)
Species Nanina jacquemontii E. von Martens, 1869 accepted as Bensonies jacquemontii (E. von Martens, 1869)
Species Nanina japonica Möllendorff, 1885 accepted as Otesiopsis japonica (Möllendorff, 1885)
Species Nanina juliana Gray, 1834 accepted as Cryptozona juliana (Gray, 1834)
Species Nanina juvenis E. A. Smith, 1895 accepted as Euplecta juvenis (E. A. Smith, 1895)
Species Nanina kivaensis Garrett, 1874 accepted as Lamprocystis kioaensis (Garrett, 1874)
Species Nanina kivi J. E. Gray, 1843 accepted as Serpho kivi (J. E. Gray, 1843)
Species Nanina koechlini Andreae, 1884 † accepted as Palaeoxestina koechlini (Andreae, 1884) †
Species Nanina koondaensis W. T. Blanford, 1870
Species Nanina laurentiana Gredler, 1887
Species Nanina layardi (Reeve, 1852) accepted as Euplecta layardi (Reeve, 1852)
Species Nanina leucophaea H. Beck, 1838
Species Nanina limbifera E. von Martens, 1873
Species Nanina linophora (Morelet, 1860) accepted as Harmogenanina linophora (Morelet, 1860)
Species Nanina lissorhaphe E. A. Smith, 1895 accepted as Zagmena lissorhaphe (E. A. Smith, 1895)
Species Nanina luconica H. Beck, 1838
Species Nanina macdougalli Issel, 1874
Species Nanina margaritacea (C. Semper, 1870) accepted as Palaua margaritacea (C. Semper, 1870)
Species Nanina mariae J. E. Gray, 1843 accepted as Laoma mariae (J. E. Gray, 1843)
Species Nanina mayonensis Hidalgo, 1887 accepted as Hemiglypta mayonensis (Hidalgo, 1887)
Species Nanina menadensis Mousson, 1857 accepted as Xesta steursii (Shuttleworth, 1852)
Species Nanina microconus Mousson, 1865 accepted as Kaliella microconus (Mousson, 1865)
Species Nanina microgyra Heude, 1882
Species Nanina mindaiensis (Bock, 1881) accepted as Dyakia mindaiensis (Bock, 1881)
Species Nanina mitiuscula E. von Martens, 1867
Species Nanina molleri Nobre, 1894 accepted as Apothapsia thomensis (Dohrn, 1866)
Species Nanina monticola W. H. Benson, 1838 accepted as Bensonies monticola (W. H. Benson, 1838)
Species Nanina morrumbalensis Melvill & Ponsonby, 1894 accepted as Zingis morrumbalensis (Melvill & Ponsonby, 1894)
Species Nanina mossambicensis (L. Pfeiffer, 1855) accepted as Trochonanina mozambicensis (L. Pfeiffer, 1855)
Species Nanina myops Dohrn & C. Semper, 1862 accepted as Lamprocystis myops (Dohrn & C. Semper, 1862)
Species Nanina nemorensis (O. F. Müller, 1774) accepted as Asperitas nemorensis (O. F. Müller, 1774)
Species Nanina nodulata Mousson, 1870 accepted as Lamprocystis nodulata (Mousson, 1870)
Species Nanina nouleti (Le Guillou, 1842) accepted as Irenella nouleti (Le Guillou, 1842)
Species Nanina orbiculum Tapparone Canefri, 1883
Species Nanina orbis (Beck, 1838) accepted as Hiona orbis (H. Beck, 1838)
Species Nanina otareae Garrett, 1872 accepted as Irenella otareae (Garrett, 1872)
Species Nanina palaensis (C. Semper, 1870) accepted as Kororia palaensis (C. Semper, 1870)
Species Nanina parcipila E. von Martens, 1864
Species Nanina parietalis E. von Martens, 1864 accepted as Helix laidlayana W. H. Benson, 1856
Species Nanina pedina (W. H. Benson, 1865) accepted as Macrochlamys pedina (W. H. Benson, 1865)
Species Nanina perpolita Mousson, 1869 accepted as Lamprocystis perpolita (Mousson, 1869)
Species Nanina pertenuis (A. Gould, 1846) accepted as Philonesia pertenuis (A. Gould, 1846)
Species Nanina pisolina A. Gould, 1859
Species Nanina plateni Dohrn, 1889 accepted as Hemitrichiella plateni (Dohrn, 1889)
Species Nanina plicatula E. von Martens, 1869 accepted as Trochonanina plicatula (E. von Martens, 1869)
Species Nanina plicatula W. T. Blanford, 1870 accepted as Nanina plicifera W. T. Blanford, 1881
Species Nanina plicifera W. T. Blanford, 1881 accepted as Tanychlamys plicifera (W. T. Blanford, 1881)
Species Nanina pollux (Theobald, 1858) accepted as Oxytesta pollux (Theobald, 1858)
Species Nanina praetumida (Morelet, 1860) accepted as Pilula praetumida (Morelet, 1860)
Species Nanina proletaria (Morelet, 1860) accepted as Dupontia proletaria (Morelet, 1860)
Species Nanina pyramidea E. von Martens, 1869 accepted as Trochonanina pyramidea (E. von Martens, 1869)
Species Nanina quadrasi Hidalgo, 1887 accepted as Pararyssota quadrasi (Hidalgo, 1887)
Species Nanina radians (L. Pfeiffer, 1853) accepted as Hiona radians (L. Pfeiffer, 1853)
Species Nanina ramsayi Liardet, 1876 accepted as Eufretum ramsayi (Liardet, 1876)
Species Nanina rejectella Mabille, 1889 accepted as Tanychlamys rejectella (Mabille, 1889)
Species Nanina renitens (Morelet, 1861) accepted as Tanychlamys renitens (Morelet, 1861)
Species Nanina resinacea Heude, 1885 accepted as Tanychlamys resinacea (Heude, 1885)
Species Nanina resplendens (R. A. Philippi, 1846) accepted as Sarika resplendens (R. A. Philippi, 1847)
Species Nanina reyesi Hidalgo, 1890 accepted as Vitrinula reyesi (Hidalgo, 1890)
Species Nanina ribbei Dohrn, 1883 accepted as Hemiplecta ribbei (Dohrn, 1883)
Species Nanina riedelii E. von Martens, 1864
Species Nanina rosseliana E. A. Smith, 1889 accepted as Zagmena rosseliana (E. A. Smith, 1889)
Species Nanina rothschildi H. Neuville & R. Anthony, 1906 accepted as Trochonanina rothschildi (H. Neuville & R. Anthony, 1906)
Species Nanina rubellocincta W. T. Blanford, 1870 accepted as Tanychlamys rubellocincta (W. T. Blanford, 1870)
Species Nanina rugata E. von Martens, 1864 accepted as Hemiplecta rugata (E. von Martens, 1864)
Species Nanina ruschenbergeri Pilsbry, 1890 accepted as Mandarina luhuana (G. B. Sowerby I, 1839)
Species Nanina ryssolemma Albers, 1852
Species Nanina salangana E. von Martens, 1883 accepted as Hemiplecta salangana (E. von Martens, 1883)
Species Nanina samoensis Mousson, 1865 accepted as Liardetia samoensis (Mousson, 1865)
Species Nanina sarawakana Dohrn, 1881
Species Nanina sarcodes (Reeve, 1851) accepted as Pseudhelicarion sarcodes (Reeve, 1851)
Species Nanina schmeltziana Mousson, 1865 accepted as Diastole schmeltziana (Mousson, 1865)
Species Nanina sciadophila Heude, 1885
Species Nanina scorpio (A. Gould, 1846) accepted as Orpiella scorpio (A. Gould, 1846)
Species Nanina semicerina (Morelet, 1851) accepted as Harmogenanina semicerina (Morelet, 1851)
Species Nanina semidecussata (Reeve, 1852) accepted as Euplecta semidecussata (Reeve, 1852)
Species Nanina semiglobosa (L. Pfeiffer, 1845) accepted as Hemiglypta fulvida semiglobosa (L. Pfeiffer, 1845)
Species Nanina semipartita (Deshayes, 1850) accepted as Xesta semipartita (Deshayes, 1850)
Species Nanina semisculpta E. von Martens, 1873 accepted as Elaphroconcha semisculpta (E. von Martens, 1873)
Species Nanina sikrigallensis G. Nevill, 1878
Species Nanina sisparica W. T. Blanford, 1866 accepted as Ariophanta sisparica (W. T. Blanford, 1866)
Species Nanina solidiuscula (E. A. Smith, 1885) accepted as Orpiella solidiuscula (E. A. Smith, 1885)
Species Nanina sophiae (Reeve, 1854) accepted as Gudeoconcha sophiae (Reeve, 1854)
Species Nanina sparsa Mousson, 1857 accepted as Asperitas sparsa (Mousson, 1857)
Species Nanina splendens W. H. Benson, 1838 accepted as Syama splendens (W. H. Benson, 1838)
Species Nanina steursii Shuttleworth, 1852 accepted as Xesta steursii (Shuttleworth, 1852)
Species Nanina striata J. E. Gray, 1834 accepted as Quantula striata (J. E. Gray, 1834)
Species Nanina strubelli Strubell, 1895 accepted as Zagmena infelix (E. A. Smith, 1893)
Species Nanina subcastor R. H. Beddome, 1891 accepted as Euplecta subcastor (R. H. Beddome, 1891)
Species Nanina subconsul E. A. Smith, 1887 accepted as Everettia subconsul (E. A. Smith, 1887)
Species Nanina subexcrecensis Garrett, 1881 accepted as Lamprocystis excrescens (Mousson, 1870)
Species Nanina subfusca (L. Pfeiffer, 1849) accepted as Pseudhelicarion subfuscus (L. Pfeiffer, 1849)
Species Nanina subtilissima (A. Gould, 1847) accepted as Euconulus subtilissimus (A. Gould, 1847)
Species Nanina sulfurata E. von Martens, 1864
Species Nanina sylvana Dohrn & C. Semper, 1862 accepted as Geotrochus sylvanus (Dohrn & C. Semper, 1862)
Species Nanina tagalensis Dohrn, 1863 accepted as Hemitrichiella tagalensis (Dohrn, 1863)
Species Nanina tahaensis Tryon, 1886 accepted as Hiona scalpta (Garrett, 1884)
Species Nanina taprobanensis Dohrn, 1860
Species Nanina taviuniensis Liardet, 1876
Species Nanina tenella Garrett, 1872 accepted as Orpiella tenella (Garrett, 1872)
Species Nanina tersa Issel, 1874 accepted as Tanychlamys tersa (Issel, 1874)
Species Nanina thalia Dohrn, 1882 accepted as Kalidos thalia (Dohrn, 1882)
Species Nanina theodori (R. A. Philippi, 1847) accepted as Hemiplecta theodori (R. A. Philippi, 1847)
Species Nanina thomensis Dohrn, 1866 accepted as Apothapsia thomensis (Dohrn, 1866)
Species Nanina tranquebarica (L. Pfeiffer, 1847) accepted as Ariophanta semirugata (H. Beck, 1837)
Species Nanina trauti F. Haas, 1912
Species Nanina treasuryensis Tryon, 1886 accepted as Orpiella treasuryensis (Tryon, 1886)
Species Nanina trochus (O. F. Müller, 1774) accepted as Asperitas trochus (O. F. Müller, 1774)
Species Nanina tullia J. E. Gray, 1850
Species Nanina turbinata H. Beck, 1838
Species Nanina unica Heude, 1885
Species Nanina unisulcata Mousson, 1865 accepted as Lamprocystis unisulcata (Mousson, 1865)
Species Nanina upolensis Mousson, 1865 accepted as Lamprocystis upolensis (Mousson, 1865)
Species Nanina venusta H. Beck, 1838 accepted as Asperitas trochus (O. F. Müller, 1774)
Species Nanina vernacula Mabille, 1887 accepted as Microcystina vernacula (Mabille, 1887)
Species Nanina verticillata Pease, 1868 accepted as Hiona verticillata (Pease, 1868)
Species Nanina vesicula W. H. Benson, 1838 accepted as Tanychlamys vesicula (W. H. Benson, 1838)
Species Nanina virens E. von Martens, 1867
Species Nanina vitellus Shuttleworth, 1852
Species Nanina vitrinina Liardet, 1876
Species Nanina vitrinoides (Deshayes, 1831) accepted as Tanychlamys vitrinoides (Deshayes, 1831)
Species Nanina vomer E. von Martens, 1891 accepted as Elaphroconcha vomer (E. von Martens, 1891)
Species Nanina waandersiana Mousson, 1857 accepted as Asperitas sparsa (Mousson, 1857)
Species Nanina wallacei (L. Pfeiffer, 1858)
Species Nanina zero Mabille, 1887 accepted as Tanychlamys zero (Mabille, 1887)
Genus Naninia Zilch, 1959 accepted as Xesta Albers, 1850
Genus Naninia G. B. Sowerby I, 1842 accepted as Xesta Albers, 1850
Genus Nilgiria Godwin-Austen, 1888 accepted as Cryptozona Mörch, 1872
Genus Ratnadvipia Godwin-Austen, 1899 (3)
Genus Ravana Godwin-Austen, 1901 (1)
Genus Schwammeria Schileyko, 2010 (1)
Genus Sitalinopsis Thiele, 1931 (1)
Genus Taphrospira W. T. Blanford, 1904 (4)
Genus Tennentia Humbert, 1862 accepted as Mariaella J. E. Gray, 1855
Genus Vega Westerlund, 1883 accepted as Mariaella J. E. Gray, 1855
Genus Xesta Albers, 1850 (21)
Genus Xestina Pfeffer, 1878 accepted as Cryptozona Mörch, 1872
Subfamily Chroninae Thiele, 1931 accepted as Chronidae Thiele, 1931
Subfamily Kaliellinae Thiele, 1931 accepted as Chronidae Thiele, 1931
Subfamily Macrochlamydinae Godwin-Austen, 1888 (464)
Subfamily Ostracolethinae Simroth, 1901 (45)
Genus Bensonies H. B. Baker, 1938 (10)
Genus Falsiplecta Schileyko & Semenyuk, 2018 (1)
Genus Maelamaodiscus Sutcharit & Pholyotha, 2023 (1)
Family Girasiidae Collinge, 1902 accepted as Girasiini Collinge, 1902
Family Gudeoconchidae Iredale, 1944 accepted as Helicarionidae Bourguignat, 1877
Family Helicarionidae Bourguignat, 1877 (650)
Family Myotestidae Collinge, 1902 accepted as Ostracolethinae Simroth, 1901
Family Urocyclidae Simroth, 1889 (467)
Genus Pilula E. von Martens, 1898 (3)
Genus Sagdellina Cossmann, 1889 † (3)
Superfamily Limacoidea Batsch, 1789 (365)
Superfamily Limacoidei incertae sedis (3)
Superfamily Parmacelloidea P. Fischer, 1856 (1855)
Superfamily Trochomorphoidea Mörch, 1864 (1 190)
Superfamily Zonitoidea Mörch, 1864 (118)
Family Milacidae Ellis, 1926 (55)
Family Parmacellidae P. Fischer, 1856 (1855) (26)
Family Trigonochlamydidae Hesse, 1882 (11)
Infraorder Oleacinoidei (497)
Infraorder Orthalicoidei (1 578)
Infraorder Partuloinei accepted as Pupilloidei
Infraorder Pupilloidei (3 436)
Infraorder Rhytidoidei (581)
Infraorder Sagdoinei accepted as Helicoidei
Infraorder Succineoidei (384)
Suborder Orthurethra accepted as Pupilloidei
Suborder Scolodontina (165)
Suborder Sigmurethra accepted as Helicina
Suborder Stylommatophora incertae sedis (75)
Order Systellommatophora (224)
Superorder Hygrophila (2 005)
Superorder Pneumopulmonata
Superorder Pylopulmonata (4 285)
Superorder Sacoglossa (391)
Superorder Siphonarimorpha (163)
Order Anaspidea accepted as Aplysiida
Order Aplysiida (101)
Order Aplysiomorpha accepted as Aplysiida
Order Archaeopulmonata accepted as Siphonarioidea Gray, 1827
Order Bullomorpha accepted as Cephalaspidea
Order Cephalaspidea (1 034)
Order Heterostropha accepted as Pyramidellidae J. E. Gray, 1840
Order Pteropoda (414)
Order Runcinacea accepted as Runcinida
Order Runcinida (80)
Order Tectibranchiata
Order Thecosomata
Order Umbraculida (15)
Superorder Euthyneura incertae sedis
Infraclass Heterobranchia incertae sedis (478)
Infraclass Mesoneura (108)
Infraclass Opisthobranchia
Infraclass Pulmonata
Subclass Neomphaliones accepted as Vetigastropoda
Subclass Neritimorpha (1 914)
Subclass Orthogastropoda represented as Gastropoda
Subclass Patellogastropoda (511)
Subclass Prosobranchia
Subclass Psilogastropoda represented as Gastropoda
Subclass Vetigastropoda (6 782)
Class Lamellibranchiata accepted as Bivalvia
Class Loricata accepted as Polyplacophora
Class Mollusca incertae sedis † (372)
Class Monoplacophora (229)
Class Pelecypoda accepted as Bivalvia
Class Polyplacophora (1 377)
Class Polyplaxiphora accepted as Polyplacophora
Class Rostroconchia † (64)
Class Scaphopoda (752)
Class Solenoconchia accepted as Scaphopoda
Class Solenogastres (313)
Subclass Chaetodermomorpha accepted as Caudofoveata