Between brackets is the number of accepted species

Click on "-" to collapse/hide all child taxa
Shows the number of accepted species within the taxon
The last expanded taxon is highlighted
Click on "+" to expand/show all child taxa
Click to see the taxon details page
- Mollusca (132 754)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (24 992)
- Class Caudofoveata (143)
- Class Cephalopoda (1 832)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 679)
- Subclass Amphigastropoda † (387)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 623)
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 154)
- Infraclass "Lower Heterobranchia" (1 137)
- Infraclass Euthyneura (37 431)
- Subterclass Acteonimorpha (411)
- Subterclass Ringipleura (2 917)
- Subterclass Tectipleura (34 103)
- Superorder Acochlidiimorpha (48)
- Superorder Ascoglossa accepted as Sacoglossa
- Superorder Basommatophora accepted as Hygrophila
- Superorder Eupulmonata (25 567)
- Order Aillyida accepted as Achatinina
- Order Ellobiida (579)
- Superfamily Ellobioidea L. Pfeiffer, 1854 (1822) (579)
- Family Auriculidae A. Férussac, 1822 accepted as Ellobiidae L. Pfeiffer, 1854 (1822)
- Family Carychiidae Jeffreys, 1830 accepted as Carychiinae Jeffreys, 1830
- Family Conovulidae W. Clark, 1850 accepted as Melampodinae W. Stimpson, 1851 (1850)
- Family Ellobiidae L. Pfeiffer, 1854 (1822) (556)
- Subfamily Carychiinae Jeffreys, 1830 (146)
- Genus Auricella Jurine, 1817 accepted as Carychium O. F. Müller, 1773
- Genus Carichium [sic] accepted as Carychium O. F. Müller, 1773
- Genus Carychiella Strauch, 1977 (4)
- Genus Carychiopsina Kadolsky, 2020 † (4)
- Genus Carychiopsis F. Sandberger, 1872 † (3)
- Genus Carychium O. F. Müller, 1773 (71)
- Subgenus Carychium (Auriculina) Moquin-Tandon, 1856 accepted as Carychium O. F. Müller, 1773
- Subgenus Carychium (Carychiella) Strauch, 1977 accepted as Carychiella Strauch, 1977
- Subgenus Carychium (Carychiopsis) F. Sandberger, 1872 † accepted as Carychiopsis F. Sandberger, 1872 †
- Subgenus Carychium (Carychium) O. F. Müller, 1773 represented as Carychium O. F. Müller, 1773
- Subgenus Carychium (Saraphia) Risso, 1826 accepted as Carychium O. F. Müller, 1773
- Subgenus Carychium (Tainocarychium) Schütt, 1988 † represented as Carychium O. F. Müller, 1773
- Species Carychium achimszulci Stworzewicz, 1999 †
- Species Carychium alpestre Freyer, 1855 accepted as Zospeum alpestre (Freyer, 1855)
- Species Carychium amoenum Frauenfeld, 1856 accepted as Zospeum amoenum (Frauenfeld, 1856)
- Species Carychium antiquum A. Braun, 1851 †
- Species Carychium apathyi Gaál, 1910 †
- Species Carychium arboreum D. C. Dourson, 2012
- Species Carychium asprolamellosum W. Yu, 1983 †
- Species Carychium bachi Kadolsky, 2020 †
- Species Carychium balianum Fulton, 1899
- Species Carychium belizeense Jochum & Weigand, 2017
- Species Carychium berellense de Laubrière & Carez, 1881 †
- Species Carychium bermudense Gulick, 1904
- Species Carychium berthae (Halaváts, 1902) †
- Species Carychium biondii Paulucci, 1882
- Species Carychium bouryi de Morgan, 1917 †
- Species Carychium boysianum W. H. Benson, 1864 accepted as Carychium indicum W. H. Benson, 1849
- Species Carychium broti [sic] † accepted as Carychium brotianum de Loriol, 1865 †
- Species Carychium brotianum de Loriol, 1865 †
- Species Carychium carinatum Hauffen, 1858 accepted as Zospeum spelaeum (Rossmässler, 1839)
- Species Carychium cholnokyi Gaál, 1910 †
- Species Carychium clappi Hubricht, 1959
- Species Carychium cochlea S. Studer, 1820 accepted as Acicula lineata (Draparnaud, 1801)
- Species Carychium coloratum Bourguignat, 1881 † accepted as Carychium nouleti Bourguignat, 1857 †
- Species Carychium conforme De Stefani, 1880 †
- Species Carychium constrictum Deshayes, 1863 † accepted as Ovicarychium michelini (de Boissy, 1848) †
- Species Carychium costaricanum E. von Martens, 1898
- Species Carychium costatum Hubricht, 1951 accepted as Carychium clappi Hubricht, 1959
- Species Carychium costatum Freyer, 1855 accepted as Zospeum costatum (Freyer, 1855)
- Species Carychium costulatum F. Sandberger, 1862 † accepted as Carychiopsina costulata (F. Sandberger, 1862) †
- Species Carychium crassum Sacco, 1886 †
- Species Carychium crossei Denainvilliers, 1875 † accepted as Carychiella crossei (Denainvilliers, 1875) †
- Species Carychium cylindroides Staadt, 1913 †
- Species Carychium cymatoplax Pilsbry, 1901
- Species Carychium delocrei Michaud, 1855 † accepted as Marinula delocrei (Michaud, 1855) †
- Species Carychium euboicum Schütt, 1988 †
- Species Carychium eumicron Bourguignat, 1857 † accepted as Carychiella eumicrum (Bourguignat, 1857) †
- Species Carychium eumicrum Bourguignat, 1857 † accepted as Carychiella minutissima (A. Braun, 1851) †
- Species Carychium euphaeum Bourguignat, 1857 accepted as Carychium exiguum (Say, 1822)
- Species Carychium eurabdium Bourguignat, 1864 † accepted as Carychiopsina costulata (F. Sandberger, 1862) †
- Species Carychium exiguum (Say, 1822)
- Species Carychium exile H. C. Lea, 1842
- Species Carychium existelium Bourguignat, 1857 accepted as Carychium exiguum (Say, 1822)
- Species Carychium filicosta Morelet, 1867 accepted as Silvigulella filicosta (Morelet, 1867)
- Species Carychium fischeri O. Boettger, 1903 †
- Species Carychium floridanum G. H. Clapp, 1918
- Species Carychium frauenfeldii Freyer, 1855 accepted as Zospeum frauenfeldii (Freyer, 1855)
- Species Carychium freyeri (F. J. Schmidt, 1849) accepted as Zospeum freyeri (F. J. Schmidt, 1849)
- Species Carychium geisserti Schlickum & Strauch, 1978 †
- Species Carychium gerstfeldti Schlesch, 1938 accepted as Carychium sibiricum Westerlund, 1897
- Species Carychium gibbum F. Sandberger, 1875 †
- Species Carychium gigas A. Férussac, 1827 accepted as Huttonella bicolor (T. Hutton, 1834)
- Species Carychium gozhiki Prisyazhnyuk, 1974 †
- Species Carychium hachijoensis Pilsbry, 1902
- Species Carychium hardiei Jochum & Weigand, 2017
- Species Carychium hellenicum Bank & E. Gittenberger, 1985
- Species Carychium hypermeces Cossmann, 1889 †
- Species Carychium ibazoricum Bank & E. Gittenberger, 1985
- Species Carychium indicum W. H. Benson, 1849
- Species Carychium irtyschensis Steklov †
- Species Carychium jardineanum (Chitty, 1853)
- Species Carychium javanum Möllendorff, 1897
- Species Carychium jochumae Auffenberg & Páll-Gergely, 2022
- Species Carychium khasiacum Godwin-Austen, 1876
- Species Carychium larteti Bourguignat, 1881 † accepted as Carychium nouleti Bourguignat, 1857 †
- Species Carychium lautum Frauenfeld, 1854 accepted as Zospeum lautum (Frauenfeld, 1854)
- Species Carychium lederi O. Boettger, 1880
- Species Carychium lineatum C. Pfeiffer, 1828 accepted as Platyla polita (W. Hartmann, 1840)
- Species Carychium loheri Möllendorff, 1898
- Species Carychium majus O. Boettger, 1870 † accepted as Carychiella eumicrum (Bourguignat, 1857) †
- Species Carychium mariae Paulucci, 1878
- Species Carychium marinae Steklov, 1966 † accepted as Carychiella marinae (Steklov, 1966) †
- Species Carychium menkeanum C. Pfeiffer, 1821
- Species Carychium mexicanum Pilsbry, 1891
- Species Carychium michaudi (de Boissy, 1848) † accepted as Carychiopsis michaudi (de Boissy, 1848) †
- Species Carychium michelini (de Boissy, 1848) † accepted as Ovicarychium michelini (de Boissy, 1848) †
- Species Carychium milneedwardsi Bourguignat, 1881 † accepted as Carychium nouleti Bourguignat, 1857 †
- Species Carychium minimum O. F. Müller, 1774
- Species Carychium minusculum Gredler, 1887
- Species Carychium minutissimum A. Braun, 1851 † accepted as Carychiella minutissima (A. Braun, 1851) †
- Species Carychium moenanum Wenz, 1917 †
- Species Carychium munieri Briart & Cornet, 1887 †
- Species Carychium nannodes G. H. Clapp, 1905
- Species Carychium nanum F. Sandberger, 1858 † accepted as Carychiella eumicrum (Bourguignat, 1857) †
- Species Carychium nashuaense Jochum, H. G. Lee & Portell, 2023 †
- Species Carychium nincki Cossmann, 1913 †
- Species Carychium nipponense Pilsbry & Y. Hirase, 1904
- Species Carychium noduliferum Reinhardt, 1877
- Species Carychium nouleti Bourguignat, 1857 †
- Species Carychium nuvium Clessin, 1912 † accepted as Carychiella minutissima (A. Braun, 1851) †
- Species Carychium obesum Frauenfeld, 1854 accepted as Zospeum obesum (Frauenfeld, 1854)
- Species Carychium occidentale Pilsbry, 1891
- Species Carychium ovatum F. Sandberger, 1880 † accepted as Carychium minimum O. F. Müller, 1774
- Species Carychium pachychilus F. Sandberger, 1872 †
- Species Carychium paganettii F. Zimmermann, 1925
- Species Carychium panamaense Jochum, 2018
- Species Carychium parietidentatum (N. K. Das & Aravind, 2021)
- Species Carychium perexiguum F. C. Baker, 1938 † accepted as Carychium exiguum (Say, 1822)
- Species Carychium personatum Michaud, 1831 accepted as Myosotella denticulata (Montagu, 1803)
- Species Carychium pessimum Pilsbry, 1901
- Species Carychium plicatum Steklov, 1966 † accepted as Carychium pachychilus F. Sandberger, 1872 †
- Species Carychium primitivum Schileyko, 1967 accepted as Carychium lederi O. Boettger, 1880
- Species Carychium pseudotetrodon Strauch, 1977 †
- Species Carychium puisseguri Truc, 1972 † accepted as Carychiella puisseguri (Truc, 1972) †
- Species Carychium pulchellum Freyer, 1855
- Species Carychium pygmaeum Michaud, 1831
- Species Carychium reticulatum Hauffen, 1856 accepted as Carychium schmidtii Frauenfeld, 1854
- Species Carychium rhenanum Strauch, 1977 †
- Species Carychium riparium Hubricht, 1978
- Species Carychium rufolabiatum De Stefani, 1880 †
- Species Carychium sandbergeri Handmann, 1887 †
- Species Carychium scalare (W. H. Benson, 1864) accepted as Coilostele scalaris W. H. Benson, 1864
- Species Carychium schlickumi Strauch, 1977 †
- Species Carychium schmidtii Frauenfeld, 1854 accepted as Zospeum schmidtii (Frauenfeld, 1854)
- Species Carychium sibiricum Westerlund, 1897
- Species Carychium sommeri C. S. Ferreira & Coelho, 1971 † accepted as Cecilioides sommeri (C. S. Ferreira & Coelho, 1971) †
- Species Carychium sparnacense Deshayes, 1863 † accepted as Ovicarychium sparnacense (Deshayes, 1863) †
- Species Carychium spectabile Rossmässler, 1839 accepted as Renea spectabilis (Rossmässler, 1839)
- Species Carychium spelaeum Rossmässler, 1839 accepted as Zospeum spelaeum (Rossmässler, 1839)
- Species Carychium starobogatovi Steklov, 1966 †
- Species Carychium stworzewiczae Harzhauser & Neubauer, 2018 †
- Species Carychium stygium Call, 1897
- Species Carychium suevicum O. Boettger, 1877 †
- Species Carychium surai Stworzewicz, 1999 † accepted as Carychiopsina surai (Stworzewicz, 1999) †
- Species Carychium tetrodon Paladilhe, 1873 †
- Species Carychium thailandicum J. B. Burch & Panha, 2002
- Species Carychium tianmushanense D.-N. Chen, 1992
- Species Carychium tridentatum (Risso, 1826)
- Species Carychium undulatum Leach, 1814 accepted as Plekocheilus aurissileni (Born, 1780)
- Species Carychium vagum Kadolsky, 2020 †
- Species Carychium vindobonense (Handmann, 1882) †
- Species Carychium zarzaae Jochum & Weigand, 2017
- Genus Coilostele W. H. Benson, 1864 (5)
- Genus Iberozospeum Jochum, Kneubühler, Prieto & Neubert, 2022 (9)
- Genus Koreozospeum Jochum & Prozorova, 2015 (1)
- Genus Ovicarychium Kadolsky, 2020 † (10)
- Genus Saraphia Risso, 1826 accepted as Carychium O. F. Müller, 1773
- Genus Speozoum Hamann, 1896 accepted as Zospeum Bourguignat, 1856
- Genus Turricarychium Kadolsky, 2020 † (1)
- Genus Vindobonia Handmann, 1882 † accepted as Carychium O. F. Müller, 1773
- Genus Zospeum Bourguignat, 1856 (37)
- Genus Zuella Kadolsky, 2020 † (1)
- Subfamily Cassidulinae Odhner, 1925 accepted as Pythiinae Odhner, 1925 (1880)
- Subfamily Ellobiinae L. Pfeiffer, 1854 (1822) (44)
- Subfamily Melampinae W. Stimpson, 1851 (1850) accepted as Melampodinae W. Stimpson, 1851 (1850)
- Subfamily Melampodinae W. Stimpson, 1851 (1850) (77)
- Subfamily Pedipedinae P. Fischer & Crosse, 1880 (56)
- Subfamily Pythiinae Odhner, 1925 (1880) (138)
- Subfamily Scarabinae P. Fischer & Crosse, 1880 accepted as Pythiinae Odhner, 1925 (1880)
- Subfamily Zaptychiinae Wenz, 1938 † (19)
- Genus Apodosis Pilsbry & T. L. McGinty, 1949 accepted as Leuconopsis F. W. Hutton, 1883
- Genus Cretacopupa X.-H. Yu, 1987 † (4)
- Genus Eozaptychius X.-H. Yu, 1987 † (3)
- Genus Juramarinula Bandel, 1991 † (1)
- Genus Leopoldium Bandel & F. Riedel, 1994 † (2)
- Genus Macrodonta Deshayes, 1861 † accepted as Stolidoma Deshayes, 1863 †
- Genus Melampoides Yen, 1951 † (4)
- Genus Mesauriculstra Yen, 1952 † (2)
- Genus Mesochilina Yen, 1951 † (3)
- Genus Palaeoleuca Wenz, 1922 † (7)
- Genus Proauricula Huckriede, 1967 † (2)
- Genus Proauriculastra Bandel, 1991 † (1)
- Genus Proplecotrema O. Boettger, 1892 † accepted as Laemodonta R. A. Philippi, 1846
- Genus Pythiopsis F. Sandberger, 1870 † (17)
- Genus Rhytophorus Meek, 1871 † (5)
- Genus Semiauricula Cossmann, 1889 † (9)
- Genus Sidula Gray, 1840 accepted as Cassidula A. Férussac, 1821
- Genus Stolidoma Deshayes, 1863 † (13)
- Genus Stolidomopsis F. Sandberger, 1875 † accepted as Stolidoma (Stolidomopsis) F. Sandberger, 1875 †
- Genus Stoliodoma [sic] † accepted as Stolidoma Deshayes, 1863 †
- Genus Tortacella C. A. White, 1895 † accepted as Zaptychius Walcott, 1883 †
- Genus Tournouerella Munier-Chalmas, 1887 † (1)
- Genus Tournoueria Munier-Chalmas, 1884 † accepted as Tournouerella Munier-Chalmas, 1887 †
- Genus Traliopsis F. Sandberger, 1870 † (2)
- Family Gadiniidae Gray, 1840 accepted as Trimusculidae J. Q. Burch, 1945 (1840)
- Family Leucophytiidae Starobogatov, 1976 accepted as Ellobiinae L. Pfeiffer, 1854 (1822)
- Family Melampidae W. Stimpson, 1851 accepted as Ellobiidae L. Pfeiffer, 1854 (1822)
- Family Otinidae H. Adams & A. Adams, 1855 (7)
- Family Smeagolidae Climo, 1980 accepted as Smeagolinae Climo, 1980
- Family Trimusculidae J. Q. Burch, 1945 (1840) (16)
- Family Zospeidae Brusina, 1886 accepted as Carychiinae Jeffreys, 1830
- Superfamily Otinoidea H. Adams & A. Adams, 1855 accepted as Ellobioidea L. Pfeiffer, 1854 (1822)
- Superfamily Trimusculoidea J. Q. Burch, 1945 (1840) accepted as Ellobioidea L. Pfeiffer, 1854 (1822)
- Order Gymnomorpha accepted as Systellommatophora
- Order Stylommatophora (24 764)
- 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