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 (133 121)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 074)
- Class Caudofoveata (143)
- Class Cephalopoda (1 864)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 927)
- Subclass Amphigastropoda † (423)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 770)
- Subclass Gastropoda incertae sedis (309)
- Subclass Heterobranchia (39 208)
- Subclass Neomphaliones accepted as Vetigastropoda
- Subclass Neritimorpha (1 915)
- Subclass Orthogastropoda represented as Gastropoda
- Subclass Patellogastropoda (514)
- Subclass Prosobranchia
- Subclass Psilogastropoda represented as Gastropoda
- Subclass Vetigastropoda (6 788)
- Order Anisobranchia accepted as Trochidae Rafinesque, 1815
- Order Cocculinida (69)
- Order Lepetellida (1 206)
- Order Neomphalida (63)
- Order Pleurotomariida (698)
- Order Seguenziida (923)
- Order Trochida (3 801)
- Superfamily Angarioidea Gray, 1857 accepted as Trochoidea Rafinesque, 1815
- Superfamily Phasianelloidea Swainson, 1840 accepted as Trochoidea Rafinesque, 1815
- Superfamily Trochoidea Rafinesque, 1815 (3 801)
- Family Angariidae J. E. Gray, 1857 (59)
- Family Anomphalidae Wenz, 1938 † (16)
- Family Araeonematidae Nützel, 2012 † (10)
- Family Areneidae J. H. McLean, 2012 (56)
- Family Ataphridae Cossmann, 1915 † (16)
- Family Calliostomatidae Thiele, 1924 (1847) (617)
- Family Colloniidae Cossmann, 1917 (362)
- Family Conradiidae A. N. Golikov & Starobogatov, 1987 (109)
- Family Crosseolidae Hickman, 2013 accepted as Conradiidae A. N. Golikov & Starobogatov, 1987
- Family Cyclostrematidae P. Fischer, 1885 accepted as Liotiidae Gray, 1850
- Family Delphinulidae Stoliczka, 1868 accepted as Angariidae J. E. Gray, 1857
- Family Elasmonematidae Knight, 1956 † (11)
- Family Epulotrochidae Gründel, Keupp & F. Lang, 2017 † (10)
- Family Eucochlidae Bandel, 2002 † (3)
- Family Fossarinidae Bandel, 2009 accepted as Fossarininae Bandel, 2009
- Family Gazidae Hickman & J. H. McLean, 1990 accepted as Margaritidae Thiele, 1924
- Family Liotiidae Gray, 1850 (154)
- Subfamily Liotiinae Gray, 1850 accepted as Liotiidae Gray, 1850
- Subfamily Mcleaniellinae Pacaud, 2018 † accepted as Mcleaniellidae Pacaud, 2018 †
- Genus Austroliotia Cotton, 1948 (9)
- Genus Bathyliotina Habe, 1961 (13)
- Genus Cenomanella Cossmann, 1918 † (2)
- Genus Circumstella Laseron, 1958 (1)
- Genus Cithna A. Adams, 1863 (8)
- Genus Cordarene S.-I Huang, C.-L. Chen & M.-H. Lin, 2018 (4)
- Genus Cyclostrema Marryat, 1819 (29)
- Genus Dentarene Iredale, 1929 (8)
- Genus Dichostasia Yochelson, 1956 † (4)
- Species Dichostasia complex Yochelson, 1956 †
- Species Dichostasia kampara Batten, 1979 †
- Species Dichostasia simplex Yochelson, 1956 †
- Species Dichostasia solariformis (Delpey, 1941) †
- Genus Globarene Iredale, 1929 (5)
- Genus Ilaira H. Adams & A. Adams, 1854 accepted as Liotia (Ilaira) H. Adams & A. Adams, 1854
- Genus Klebyella Gründel, 1998 † (1)
- Genus Liotia J. E. Gray, 1842 (16)
- Genus Liotina P. Fischer, 1885 (6)
- Genus Liotinaria T. Habe, 1955 (5)
- Genus Macrarene Hertlein & A. M. Strong, 1951 (7)
- Genus Moniliotina S.-I Huang, M.-H. Lin & C.-L. Chen, 2019 (4)
- Genus Munditia H. J. Finlay, 1926 (17)
- Genus Pareuchelus O. Boettger, 1907 † (10)
- Genus Pterarene Sakurai & Habe, 1977 (1)
- Genus Rhodinoliotia Tomlin & Shackleford, 1915 (1)
- Genus Rotaliotina S.-I Huang, 2023 (2)
- Genus Rufanula Barnard, 1963 (1)
- Family Liotinidae Nomura, 1932 accepted as Liotiidae Gray, 1850
- Family Margaritidae Thiele, 1924 (76)
- Family Margaritinae Stoliczka, 1868 accepted as Margaritidae Thiele, 1924
- Family Metriomphalidae Gründel, Keupp & F. Lang, 2017 † (8)
- Family Microdomatidae Wenz, 1938 † (12)
- Family Nododelphinulidae L. R. Cox, 1960 † (17)
- Family Paleophasianellidae Chaix & Plicot, 2024 † (2)
- Family Phasianellidae Swainson, 1840 (84)
- Family Proconulidae L. R. Cox, 1960 † (10)
- Family Sclarotrardidae Gründel, Keupp & F. Lang, 2017 † (1)
- Family Skeneidae W. Clark, 1851 (440)
- Family Solariellidae A. W. B. Powell, 1951 (272)
- Family Stomatellidae J. E. Gray, 1840 accepted as Stomatellinae J. E. Gray, 1840
- Family Stomatiidae P. P. Carpenter, 1861 accepted as Stomatellinae J. E. Gray, 1840
- Family Talopiidae Finlay, 1928 accepted as Umboniinae H. Adams & A. Adams, 1854 (1840)
- Family Tegulidae Kuroda, Habe & Oyama, 1971 (120)
- Family Tricoliidae Woodring, 1928 accepted as Tricoliinae Woodring, 1928
- Family Trochidae Rafinesque, 1815 (1 045)
- Family Trochoidea incertae sedis (15)
- Family Turbinidae Rafinesque, 1815 (275)
- Family Tychobraheidae Horný, 1992 † (1)
- Family Velainellidae Vasseur, 1880 †
- Subfamily Minoliinae Kuroda, T. Habe & Oyama, 1971 accepted as Solariellidae A. W. B. Powell, 1951
- Subfamily Parataphrinae Calzada, 1989 † accepted as Proconulidae L. R. Cox, 1960 †
- Superfamily Fissurellacea accepted as Fissurelloidea J. Fleming, 1822
- Superfamily Trochacea accepted as Trochoidea Rafinesque, 1815
- Superfamily Turbinoidea Rafinesque, 1815 accepted as Trochoidea Rafinesque, 1815
- Superfamily Vetigastropoda incertae sedis (28)
- 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 (1 381)
- Class Polyplaxiphora accepted as Polyplacophora
- Class Rostroconchia † (64)
- Class Scaphopoda (753)
- Class Solenoconchia accepted as Scaphopoda
- Class Solenogastres (313)
- Subclass Chaetodermomorpha accepted as Caudofoveata