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 (132 791)
- 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)
- Subterclass Sorbeoconcha (147)
- Superorder Hypsogastropoda
- Order Architaenioglossa (4 918)
- Order Caenogastropoda incertae sedis (7 676)
- Order Littorinimorpha (17 179)
- Superfamily Calyptraeoidea Lamarck, 1809 (203)
- Superfamily Capuloidea J. Fleming, 1822 (218)
- Superfamily Cassoidea accepted as Tonnoidea Suter, 1913 (1825)
- Superfamily Cingulopsoidea Fretter & Patil, 1958 (193)
- Superfamily Crepiduloidea J. Fleming, 1822 accepted as Calyptraeoidea Lamarck, 1809
- Superfamily Cypraeoidea Rafinesque, 1815 (1 285)
- Superfamily Eulimoidea R. A. Philippi, 1853 accepted as Vanikoroidea Gray, 1840
- Superfamily Ficoidea Meek, 1864 (1840) (71)
- Superfamily Heteropoda Lamarck, 1812 accepted as Pterotracheoidea Rafinesque, 1814
- Superfamily Hipponicoidea Troschel, 1861 (99)
- Superfamily Littorinoidea Children, 1834 (1 372)
- Superfamily Naticoidea Guilding, 1834 (688)
- Superfamily Pterotracheoidea Rafinesque, 1814 (63)
- Superfamily Rissoacea accepted as Rissooidea Gray, 1847
- Superfamily Rissoinoidea W. Stimpson, 1865 accepted as Rissooidea Gray, 1847
- Superfamily Rissooidea Gray, 1847 (2 311)
- Family Anabathroninae Coan, 1964 accepted as Anabathridae Keen, 1971
- Family Ansolidae Slavoshevskaya, 1975 accepted as Barleeiidae J. E. Gray, 1857
- Family Barleeidae [sic] accepted as Barleeiidae J. E. Gray, 1857
- Family Barleeiidae J. E. Gray, 1857 (104)
- Family Emblandidae Ponder, 1985 (1)
- Family Falsobuvignidae Gründel, Keupp & F. Lang, 2019 † (1)
- Family Lironobidae Ponder, 1967 (67)
- Family Merelinidae A. N. Golikov & Starobogatov, 1975 accepted as Lironobidae Ponder, 1967
- Family Onobidae A. N. Golikov & Starobogatov, 1975 accepted as Rissoidae J. E. Gray, 1847
- Family Palaeorissoinidae Gründel & Kowalke, 2002 † (26)
- Family Rissoidae J. E. Gray, 1847 (1 351)
- Subfamily Archascheniinae Zhgenti, 1991 † (2)
- Subfamily Cingulinae Keen, 1971 accepted as Rissoidae J. E. Gray, 1847
- Subfamily Mohrensterniinae Korobkov, 1955 † (22)
- Subfamily Rissoinae J. E. Gray, 1847 accepted as Rissoidae J. E. Gray, 1847
- Subfamily Rissoininae W. Stimpson, 1865 accepted as Rissoinidae W. Stimpson, 1865
- Subfamily Setiinae V. V. Anistratenko & Starobogatov, 1994 accepted as Rissoidae J. E. Gray, 1847
- Genus Acinopsis Monterosato, 1884 accepted as Alvania Risso, 1826
- Genus Acinus Monterosato, 1884 accepted as Alvania Risso, 1826
- Genus Actonia Monterosato, 1884 accepted as Alvania Risso, 1826
- Genus Adolphinoba A. W. B. Powell, 1930 accepted as Attenuata Hedley, 1918
- Genus Alcidia Monterosato, 1890 accepted as Alvania Risso, 1826
- Genus Alsatia Andreae, 1884 † (1)
- Genus Alvanea [sic] accepted as Alvania Risso, 1826
- Genus Alvania Risso, 1826 (478)
- Genus Alvinia Monterosato, 1884 accepted as Alvania Risso, 1826
- Genus Ameririssoa Ponder, 1985 accepted as Alvania Risso, 1826
- Genus Amphirissoa Dautzenberg & H. Fischer, 1897 (1)
- Genus Apicularia Monterosato, 1884 accepted as Rissoa Desmarest, 1814 (1)
- Genus Arctonia A. N. Golikov, 1977 accepted as Frigidoalvania Warén, 1974
- Genus Arsenia Monterosato, 1891 accepted as Alvania Risso, 1826
- Genus Assiminopsis Locard, 1897 accepted as Benthonella Dall, 1889
- Genus Auriconoba F. Nordsieck, 1972 accepted as Rissoa Desmarest, 1814
- Genus Austronoba A. W. B. Powell, 1927 accepted as Onoba H. Adams & A. Adams, 1852
- Genus Badenia H. J. Finlay, 1930 † accepted as Onoba (Ovirissoa) Hedley, 1916
- Genus Banlashania X.-H. Yu, 1987 † (2)
- Genus Benthonella Dall, 1889 (16)
- Genus Benthonellania Lozouet, 1990 (30)
- Genus Boreocingula A. N. Golikov & Kussakin, 1974 (5)
- Genus Boreomica Guzhov, 2017 † (2)
- Genus Botryphallus Ponder, 1990 (3)
- Genus Calvadosia Cossmann, 1921 † accepted as Calvadosiella Wenz, 1939 †
- Genus Calvadosiella Wenz, 1939 † (1)
- Genus Cingilla Monterosato, 1884 accepted as Cingula J. Fleming, 1818
- Genus Cingula J. Fleming, 1818 (48)
- Genus Cingulina Monterosato, 1884 accepted as Obtusella Cossmann, 1921
- Genus Conalvinia Ponder, 1967 accepted as Alvania Risso, 1826
- Genus Crisilla Monterosato, 1917 (46)
- Genus Ellenstrongia Amati, Di Giulio & Oliverio, 2023 (1)
- Genus Falsisetia A. N. Golikov & Kussakin, 1967 accepted as Lucidestea Laseron, 1956
- Genus Flemellia F. Nordsieck, 1972 accepted as Alvania Risso, 1826
- Genus Flemingia Jeffreys, 1884 accepted as Alvania Risso, 1826
- Genus Frigidoalvania Warén, 1974 (9)
- Genus Galeodina Monterosato, 1884 accepted as Alvania Risso, 1826
- Genus Galeodinopsis Sacco, 1895 (5)
- Genus Gofasia Bouchet & Warén, 1993 (7)
- Genus Goniostoma A. Villa & J. B. Villa, 1841 accepted as Rissoa Desmarest, 1814
- Genus Gueriniana F. Nordsieck, 1972 accepted as Rissoa Desmarest, 1814
- Genus Haurakia Iredale, 1915 (36)
- Genus Haurakiopsis A. W. B. Powell, 1937 accepted as Haurakia Iredale, 1915
- Genus Hela Jeffreys, 1870 accepted as Benthonella Dall, 1889
- Genus Hirsonella J.-C. Fischer, 1969 † (1)
- Genus Ihungia Marwick, 1931 † (8)
- Genus Koskinakra Kadolsky, 2016 † (1)
- Genus Lamarckia Leach, 1852 accepted as Rissoa Desmarest, 1814
- Genus Lilacinia F. Nordsieck, 1972 accepted as Rissoa Desmarest, 1814
- Genus Linemera H. J. Finlay, 1924 accepted as Alvania (Linemera) H. J. Finlay, 1924 (1)
- Genus Liroculma Ponder, 1967 accepted as Onoba (Subestea) Cotton, 1944
- Genus Loxostoma Bivona e Bernardi, 1838 accepted as Rissoa Desmarest, 1814
- Genus Lucidestea Laseron, 1956 (21)
- Genus Madeiranzonia Moolenbeek & Faber, 2007 (1)
- Genus Manawatawhia A. W. B. Powell, 1937 accepted as Onoba (Manawatawhia) A. W. B. Powell, 1937
- Genus Manzonia Brusina, 1870 (43)
- Genus Massotia Bucquoy, Dautzenberg & Dollfus, 1884 accepted as Alvania Risso, 1826
- Genus Mereliniopsis Ponder, 1967 accepted as Merelina Iredale, 1915
- Genus Micromanzonia Moolenbeek & Raven, 2024 (1)
- Genus Moniziella F. Nordsieck, 1972 accepted as Alvania Risso, 1826
- Genus Mutiturboella F. Nordsieck, 1972 accepted as Pusillina Monterosato, 1884
- Genus Nobolira H. J. Finlay, 1926 accepted as Attenuata Hedley, 1918
- Genus Obtusella Cossmann, 1921 (10)
- Genus Omanimerelina Moolenbeek & Bosch, 2007 (1)
- Genus Onoba H. Adams & A. Adams, 1852 (121)
- Genus Ovirissoa Hedley, 1916 accepted as Onoba (Ovirissoa) Hedley, 1916 (3)
- Genus Palaeoceratia Gründel, 1999 † (1)
- Genus Parashiela Laseron, 1956 (9)
- Genus Parvisetia Monterosato, 1884 accepted as Setia H. Adams & A. Adams, 1852
- Genus Paryphostoma Bayan, 1873 † (1)
- Genus Peringiella Monterosato, 1878 (5)
- Genus Persephona Leach, 1852 accepted as Rissoa Desmarest, 1814
- Genus Plagiostyla Fischer, 1872 accepted as Plagyostila de Folin, 1872
- Genus Plagyostila de Folin, 1872 (3)
- Genus Polyhyba F. Haas, 1947
- Genus Pontiturboella Sitnikova, Starobogatov & V. Anistratenko, 1992 (1)
- Genus Porosalvania Gofas, 2007 (8)
- Genus Powellia H. J. Finlay, 1926 † accepted as Badenia H. J. Finlay, 1930 †
- Genus Powellisetia Ponder, 1965 (32)
- Genus Profundialvania Taviani, 1975 accepted as Alvania Risso, 1826
- Genus Promerelina A. W. B. Powell, 1926 accepted as Merelina Iredale, 1915
- Genus Pseudalvania A. W. Janssen, 1967 accepted as Alvania Risso, 1826
- Genus Pseudosetia Monterosato, 1884 (12)
- Genus Punctulum Jeffreys, 1884 (6)
- Genus Pusillina Monterosato, 1884 (30)
- Genus Pyrgosformisia J. Barros, S. Lima & D. Tenório, 2018 (1)
- Genus Quarkia Faber, 2009 (1)
- Genus Radiata [sic] accepted as Pusillina Monterosato, 1884
- Genus Rissoa Desmarest, 1814 (199)
- Genus Rissoia Bronn, 1848 accepted as Rissoa Desmarest, 1814 (1)
- Genus Rissooidea incertae sedis
- Genus Rissostomia G. O. Sars, 1878 accepted as Rissoa Desmarest, 1814
- Genus Rudolphosetia Monterosato, 1917 accepted as Setia H. Adams & A. Adams, 1852
- Genus Sabanaea Leach, 1847 accepted as Cingula J. Fleming, 1818
- Genus Sabanea Leach in Gray, 1847 sensu Monterosato, 1884 accepted as Pusillina Monterosato, 1884
- Genus Sabanea [sic] accepted as Cingula J. Fleming, 1818
- Genus Schwartzia Bucquoy, Dautzenberg & Dollfus, 1884 accepted as Rissoa Desmarest, 1814
- Genus Setia H. Adams & A. Adams, 1852 (32)
- Genus Sfaxiella F. Nordsieck, 1972 accepted as Rissoa Desmarest, 1814
- Genus Similalvania Chirli & Forli, 2021 † (1)
- Genus Simulamerelina Ponder, 1985 (25)
- Genus Striatestea A. W. B. Powell, 1927 (4)
- Species Striatestea bountyensis A. W. B. Powell, 1927
- Species Striatestea eulima A. W. B. Powell, 1940
- Species Striatestea poutama Ponder, 1967
- Species Striatestea powelli Laws, 1950 †
- Genus Subestea Cotton, 1944 (7)
- Genus Subonoba Iredale, 1915 (27)
- Genus Taramellia L. Seguenza, 1903 accepted as Alvania Risso, 1826
- Genus Thapsia Monterosato, 1884 accepted as Alvania Risso, 1826
- Genus Thapsiella P. Fischer, 1885 accepted as Alvania Risso, 1826
- Genus Thierachella J.-C. Fischer, 1969 † (2)
- Genus Trochoturbella Cossmann, 1921 † (5)
- Genus Turbella [sic] accepted as Turboella Leach, 1847
- Genus Turboella Leach, 1847 accepted as Rissoa Desmarest, 1814 (4)
- Genus Turbona Leach, 1847 accepted as Alvania Risso, 1826
- Genus Turgidina Verduin, 1979 accepted as Pusillina Monterosato, 1884
- Genus Vitricithna Laseron, 1956 accepted as Haurakia Iredale, 1915
- Genus Voorwindia Ponder, 1985 (5)
- Genus Zacanthusa Leach, 1852 accepted as Alvania Risso, 1826
- Genus Zhgentia Iljina, 2006 † (1)
- Genus Zippora Leach, 1852 accepted as Rissoa Desmarest, 1814
- Family Rissoidea accepted as Rissooidea Gray, 1847
- Family Rissoinidae W. Stimpson, 1865 (529)
- Family Rissolinidae Voorwinde, 1966 accepted as Rissoinidae W. Stimpson, 1865
- Family Zebinidae Coan, 1964 (232)
- Superfamily Stromboidea Rafinesque, 1815 (835)
- Superfamily Tonnoidea Suter, 1913 (1825) (788)
- Superfamily Truncatelloidea J. E. Gray, 1840 (6 902)
- Superfamily Vanikoroidea Gray, 1840 (1 331)
- Superfamily Velutinoidea Gray, 1840 (648)
- Superfamily Vermetoidea Rafinesque, 1815 (172)
- Superfamily Xenophoroidea Troschel, 1852 (1840) accepted as Stromboidea Rafinesque, 1815
- Order Neogastropoda (23 716)
- Order Stenoglossa accepted as Neogastropoda
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 156)
- 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