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- Mollusca (132 738)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (24 984)
- Class Caudofoveata (143)
- Class Cephalopoda (1 830)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 673)
- Subclass Amphigastropoda † (387)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 618)
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 153)
- Infraclass "Lower Heterobranchia" (1 137)
- Infraclass Euthyneura (37 430)
- Subterclass Acteonimorpha (411)
- Subterclass Ringipleura (2 917)
- Subterclass Tectipleura (34 102)
- Superorder Acochlidiimorpha (48)
- Superorder Ascoglossa accepted as Sacoglossa
- Superorder Basommatophora accepted as Hygrophila
- Superorder Eupulmonata (25 566)
- Order Aillyida accepted as Achatinina
- Order Ellobiida (579)
- Order Gymnomorpha accepted as Systellommatophora
- Order Stylommatophora (24 763)
- Suborder Achatinina (2 899)
- Suborder Elasmognatha accepted as Succineoidei
- Suborder Helicina (21 624)
- Infraorder Arionoidei (139)
- Infraorder Clausilioidei (1 859)
- Infraorder Helicina incertae sedis (3 210)
- Infraorder Helicoidei (5 690)
- Superfamily Helicoidea Rafinesque, 1815 (5 491)
- Family Ariantidae Mörch, 1864 accepted as Ariantinae Mörch, 1864
- Family Bradybaenidae Pilsbry, 1934 (1898) accepted as Camaenidae Pilsbry, 1895
- Family Calyciidae Iredale, 1941 accepted as Hadrinae Iredale, 1937
- Family Camaenidae Pilsbry, 1895 (2 898)
- Subfamily Aegistinae Kuroda & Habe, 1949 accepted as Aegistini Kuroda & Habe, 1949
- Subfamily Amphidrominae Kobelt, 1902 accepted as Camaeninae Pilsbry, 1895
- Subfamily Bradybaeninae Pilsbry, 1934 (1898) (763)
- Tribe Aegistini Kuroda & Habe, 1949 (392)
- Tribe Bradybaenini Pilsbry, 1934 (1898) (327)
- Genus Acusta E. von Martens, 1860 (9)
- Genus Ainohelix Kuroda & Iw. Taki, 1933 (1)
- Genus Apatetes Gude, 1914 (1)
- Genus Armandia Ancey, 1883 accepted as Armandiella Ancey, 1901
- Genus Armandiella Ancey, 1901 (2)
- Genus Bradybaena H. Beck, 1837 (65)
- Genus Buliminidius Heude, 1890 (11)
- Genus Buliminopsis Heude, 1890 accepted as Pseudobuliminus Gredler, 1886
- Genus Campylocathaica Andreae, 1900 accepted as Cathaica Möllendorff, 1884
- Genus Cathaica Möllendorff, 1884 (53)
- Subgenus Cathaica (Campylocathaica) Andreae, 1900 accepted as Cathaica Möllendorff, 1884
- Subgenus Cathaica (Cathaica) Möllendorff, 1884 represented as Cathaica Möllendorff, 1884
- Subgenus Cathaica (Eucathaica) Andreae, 1900 accepted as Cathaica Möllendorff, 1884
- Subgenus Cathaica (Laeocathaica) Möllendorff, 1899 accepted as Laeocathaica Möllendorff, 1899
- Subgenus Cathaica (Platypetasus) Pilsbry, 1895 accepted as Platypetasus Pilsbry, 1895
- Subgenus Cathaica (Pliocathaica) Andreae, 1900 accepted as Pliocathaica Andreae, 1900
- Subgenus Cathaica (Pseudiberus) Ancey, 1887 accepted as Pseudiberus Ancey, 1887
- Subgenus Cathaica (Trichocathaica) Gude, 1919 accepted as Trichocathaica Gude, 1919
- Subgenus Cathaica (Xerocathaica) Andreae, 1900 represented as Cathaica Möllendorff, 1884
- Species Cathaica antiqua Y.-T. Li, 1985 †
- Species Cathaica apollonis (E. von Martens, 1882) accepted as Archaica apollinis (E. von Martens, 1882)
- Species Cathaica bizonalis D.-N. Chen & G.-Q. Zhang, 2004
- Species Cathaica brodskii Tzvetkov & Tzvetkova, 1950 accepted as Fruticicola tzwetkovi (Uvalieva & Soboleva, 1973)
- Species Cathaica caelestimontana Tzvetkov, 1940 accepted as Paedhoplita laminata Lindholm, 1927
- Species Cathaica cardiostoma Möllendorff, 1899
- Species Cathaica cavimargo (E. von Martens, 1879) accepted as Fruticicola cavimargo (E. von Martens, 1879)
- Species Cathaica chumbanensis D.-N. Chen & G.-Q. Zhang, 2004
- Species Cathaica connectens Möllendorff, 1899
- Species Cathaica constantiae (H. Adams, 1870)
- Species Cathaica corrugata Möllendorff, 1899
- Species Cathaica cucunorica Möllendorff, 1899
- Species Cathaica cunlunensis Möllendorff, 1899
- Species Cathaica darlagensis M. Wu, 2002
- Species Cathaica dejeana (Heude, 1882) accepted as Laeocathaica dejeana (Heude, 1882)
- Species Cathaica dichrozona (E. von Martens, 1885) accepted as Fruticicola dichrozona (E. von Martens, 1885)
- Species Cathaica fasciola (Draparnaud, 1801)
- Species Cathaica fedtschenkoi (E. von Martens, 1874) accepted as Bradybaena fedtschenkoi (E. von Martens, 1874)
- Species Cathaica ferghanica Lindholm, 1927 accepted as Leucozonella ferghanica (Lindholm, 1927)
- Species Cathaica fohuiensis G. Zhang, 2023
- Species Cathaica funki Ancey, 1897
- Species Cathaica gansuica Möllendorff, 1899 accepted as Pliocathaica gansuica (Möllendorff, 1899)
- Species Cathaica heptapotamica Lindholm, 1927 accepted as Archaica heptapotamica (Lindholm, 1927)
- Species Cathaica hermanni Gude, 1904 accepted as Ponsadenia (Ponsadenia) semenowi (E. von Martens, 1864)
- Species Cathaica holdereri Andreae, 1904
- Species Cathaica hookeri (Godwin-Austen, 1914)
- Species Cathaica iacosta Möllendorff, 1899 accepted as Fruticicola cavimargo (E. von Martens, 1879)
- Species Cathaica janulus Möllendorff, 1899
- Species Cathaica keiseri T. D. A. Cockerell, 1928 accepted as Ponsadenia semenovi (E. von Martens, 1864)
- Species Cathaica kokpoktasica Tzvetkova, 1950 accepted as Archaica heptapotamica (Lindholm, 1927)
- Species Cathaica kreitneri (Hilber, 1883) †
- Species Cathaica leei Yen, 1935
- Species Cathaica licenti Yen, 1935
- Species Cathaica lyonsae Gude, 1919 accepted as Trichocathaica lyonsae (Gude, 1919)
- Species Cathaica mataianensis (G. Nevill, 1878)
- Species Cathaica mengi Yen, 1935
- Species Cathaica micangshanensis D.-N. Chen & G.-Q. Zhang, 2004
- Species Cathaica mongolica (Möllendorff, 1881)
- Species Cathaica multicostata G. Zhang, 2023
- Species Cathaica nanschanensis Möllendorff, 1899
- Species Cathaica nodulifera Möllendorff, 1899
- Species Cathaica obrutschewi Sturany, 1899
- Species Cathaica ochthephiloides Möllendorff, 1899
- Species Cathaica ohlmeri Andreae, 1904
- Species Cathaica orestias (Preston, 1912)
- Species Cathaica orithyia (E. von Martens, 1879)
- Species Cathaica orithyiformis Yen, 1935
- Species Cathaica ottoi Pilsbry, 1934
- Species Cathaica pekinensis (Deshayes, 1874)
- Species Cathaica perversa Sturany, 1899
- Species Cathaica phaeozona (E. von Martens, 1874) accepted as Fruticicola phaeozona (E. von Martens, 1874)
- Species Cathaica plectotropis (E. von Martens, 1864) accepted as Fruticicola plectotropis (E. von Martens, 1864)
- Species Cathaica polystigma Möllendorff, 1899
- Species Cathaica przewalskii (E. von Martens, 1882)
- Species Cathaica pulveratricula (E. von Martens, 1882) accepted as Pliocathaica pulveratricula (E. von Martens, 1882)
- Species Cathaica pulveratrix (E. von Martens, 1882)
- Species Cathaica pyrrhozona (R. A. Philippi, 1845)
- Species Cathaica radiata Pilsbry, 1934
- Species Cathaica richthofeni (E. von Martens, 1874)
- Species Cathaica robertsi Yen, 1935
- Species Cathaica rossimontana Möllendorff, 1899
- Species Cathaica rufispira (E. von Martens, 1874) accepted as Leucozonella rufispira (E. von Martens, 1874)
- Species Cathaica rugulosa D.-N. Chen & G.-Q. Zhang, 2004
- Species Cathaica rugulosus D.-N. Chen & G.-Q. Zhang, 2004 accepted as Cathaica rugulosa D.-N. Chen & G.-Q. Zhang, 2004
- Species Cathaica secusana (Gredler, 1892)
- Species Cathaica semenowi (E. von Martens, 1864) accepted as Ponsadenia semenowi (E. von Martens, 1864)
- Species Cathaica shikouensis Yen, 1935
- Species Cathaica siningfuensis (Hilber, 1882)
- Species Cathaica stoliczkana (L. Pfeiffer, 1877) accepted as Fruticicola stoliczkana (L. Pfeiffer, 1877)
- Species Cathaica subrugosa (Deshayes, 1874)
- Species Cathaica suegoschuriana A. Weber, 1913
- Species Cathaica teilhardi Yen, 1935
- Species Cathaica tianshanica Lindholm, 1927 accepted as Archaica heptapotamica (Lindholm, 1927)
- Species Cathaica transitans Möllendorff, 1899
- Species Cathaica wangguanensis D.-N. Chen & G.-Q. Zhang, 2004
- Species Cathaica weigoldi Blume, 1927
- Species Cathaica zoui M. Wu, 2024
- Genus Chosenelix Pilsbry, 1927 (2)
- Genus Coccoglypta Pilsbry, 1895 (7)
- Genus Eucathaica Andreae, 1900 accepted as Cathaica Möllendorff, 1884
- Genus Eulota W. Hartmann, 1841 accepted as Fruticicola Held, 1838
- Genus Eulotella E. von Martens, 1891 accepted as Bradybaena H. Beck, 1837
- Genus Ezohelix Kuroda & Emura, 1938
- Genus Fruticicola Held, 1838 (30)
- Genus Funiculus Heude, 1888 accepted as Buliminidius Heude, 1890
- Genus Grabauia Yen, 1935
- Genus Karaftohelix Pilsbry, 1927 (24)
- Genus Kaznakoviella Lindholm, 1922 accepted as Fruticicola Held, 1838
- Genus Koreanohadra Kuroda & T. Habe, 1949 accepted as Fruticicola Held, 1838
- Genus Kugitangia Schileyko, Pazilov & Abdulazizova, 2017 (1)
- Genus Laeocathaica Möllendorff, 1899 (27)
- Genus Metodontia Möllendorff, 1886 (8)
- Genus Mikiria Godwin-Austen, 1918 (1)
- Genus Neofruticicola Schileyko, Pazilov & Abdulazizova, 2020 (1)
- Genus Neseulota Ehrmann, 1911
- Genus Paraegista Kuroda & Azuma, 1951 (1)
- Genus Phaeohelix Kuroda & Habe, 1949 (3)
- Genus Platypetasus Pilsbry, 1895 (8)
- Genus Pliocathaica Andreae, 1900 (3)
- Genus Ponsadenia Schileyko, 1978 (6)
- Genus Pseudiberus Ancey, 1887 (11)
- Genus Pseudobuliminus Gredler, 1886 (25)
- Genus Rudens Heude, 1890 (1)
- Genus Secusana Gredler, 1894 (3)
- Genus Semibuliminus Möllendorff, 1899 accepted as Metodontia Möllendorff, 1886
- Genus Stenogyropsis Möllendorff, 1899 (3)
- Genus Stilpnodiscus Möllendorff, 1899 (8)
- Genus Tetrodontina Ancey, 1887 accepted as Metodontia Möllendorff, 1886
- Genus Trichobradybaena M. Wu & J.-Y. Guo, 2003 (3)
- Genus Trichocathaica Gude, 1919 (9)
- Genus Virginihelix Kuroda & T. Habe, 1949 accepted as Fruticicola Held, 1838
- Tribe Euhadrini Habe, Okutani & Nishiwaki, 1994 (33)
- Genus Crenatilabiellus H.-J. Wang, 1982 † (1)
- Genus Eueuhadra M. Wu, 2004 (1)
- Genus Fruticoconus Möllendorff, 1882
- Genus Jiaoliaous G. Zhang, 2024 (1)
- Genus Sinochloritis M. Wu & Z.-Y. Chen, 2019 (1)
- Genus Sinorachis M. Wu & Z.-Y. Chen, 2019 (3)
- Genus Traumatophora Ancey, 1887 (2)
- Genus Undatornatus H.-J. Wang, 1982 † (2)
- Subfamily Camaeninae Pilsbry, 1895 (600)
- Subfamily Cristovalinae Schileyko, 2003 accepted as Hadrinae Iredale, 1937
- Subfamily Hadrinae Iredale, 1937 (1 165)
- Subfamily Helicostylinae Ihering, 1909 (1890) (343)
- Subfamily Papuininae Iredale, 1938 accepted as Hadrinae Iredale, 1937
- Subfamily Pfeifferiinae Gray, 1855 accepted as Helicostylinae Ihering, 1909 (1890)
- Subfamily Sinumeloninae Solem, 1992 accepted as Hadrinae Iredale, 1937
- Subfamily Xanthomelontinae Iredale, 1937 accepted as Hadrinae Iredale, 1937
- Genus Amphicoelina F. Haas, 1933 accepted as Amphicoelina Zilch, 1960
- Genus Archaeoxesta Kobelt, 1909 † (1)
- Genus Geotrochus Swainson, 1840 accepted as Helix (Papuina) E. von Martens, 1860
- Genus Gracillinoconcha W. Yü & X.-Q. Zhang, 1982 † (1)
- Genus Hodopoeus Pilsbry & T. D. A. Cockerell, 1945 † (2)
- Genus Iforasia J.-C. Fischer, 1963 † (1)
- Genus Indocamaena Thach, 2023 (2)
- Genus Kanabohelix Pilsbry, 1927 † (1)
- Genus Kenyirus Clements & Tan, 2012 (3)
- Genus Limonohelix W. Yü & X.-Q. Zhang, 1982 † (3)
- Genus Miocenehadra T. Habe & Itoigawa, 1976 † (2)
- Genus Multiscapta W. Yü, 1982 † (3)
- Genus Ogeramua Christensen, 2017 (2)
- Genus Papuanella Clench & R. D. Turner, 1959 accepted as Ogeramua Christensen, 2017
- Genus Philbouchetia Thach, 2020 (1)
- Genus Planodoma W. Yü & H.-Z. Pan, 1982 † (1)
- Genus Sanshuispira W. Yü & X.-Q. Zhang, 1982 † (3)
- Genus Sinocamaena M. Wu, 2024 (1)
- Family Canariellidae Schileyko, 1991 (56)
- Family Cepolidae Ihering, 1909 (102)
- Family Chloritidae Iredale, 1938 accepted as Hadrinae Iredale, 1937
- Family Cochlicellidae Schileyko, 1972 accepted as Cochlicellini Schileyko, 1972
- Family Cochlicellinae Schileyko, 1972 accepted as Cochlicellini Schileyko, 1972
- Family Cochlostylidae Möllendorff, 1890 accepted as Helicostylinae Ihering, 1909 (1890)
- Family Echinichidae F. G. Thompson & Naranjo-García, 2012 accepted as Echinichinae F. G. Thompson & Naranjo-García, 2012
- Family Elonidae E. Gittenberger, 1977 (63)
- Family Epiphragmophoridae Hoffmann, 1928 (72)
- Family Eulotidae Möllendorff, 1898 accepted as Bradybaenini Pilsbry, 1934 (1898)
- Family Geomitridae C. R. Boettger, 1909 (402)
- Family Helicellidae Ihering, 1909 accepted as Hygromiidae Tryon, 1866
- Family Helicidae Rafinesque, 1815 (500)
- Family Helicodontidae Kobelt, 1904 (26)
- Family Helminthoglyptidae Pilsbry, 1939 accepted as Helminthoglyptinae Pilsbry, 1939
- Family Humboldtianidae Pilsbry, 1939 accepted as Humboldtianinae Pilsbry, 1939
- Family Hygromiidae Tryon, 1866 (460)
- Family Jacostidae Pilsbry, 1948 accepted as Helicellini Ihering, 1909
- Family Labyrinthidae Borrero, Sei, D. G. Robinson & Rosenberg, 2017 (58)
- Family Lampadiidae Winckworth, 1945 accepted as Labyrinthidae Borrero, Sei, D. G. Robinson & Rosenberg, 2017
- Family Leucochroidae Westerlund, 1886 accepted as Sphincterochilinae Zilch, 1960 (1886)
- Family Lysinoidae Hoffmann, 1928 accepted as Lysinoinae Hoffmann, 1928
- Family Monadeniidae H. Nordsieck, 1987 accepted as Monadeniinae H. Nordsieck, 1987
- Family Papuinidae Iredale, 1938 accepted as Hadrinae Iredale, 1937
- Family Pentataeniidae Mörch, 1864 accepted as Helicini Rafinesque, 1815
- Family Planispiridae Iredale, 1941 accepted as Hadrinae Iredale, 1937
- Family Pleurodontidae Ihering, 1912 (57)
- Family Polygyridae Pilsbry, 1895 (311)
- Family Rhagadidae Iredale, 1938 accepted as Hadrinae Iredale, 1937
- Family Sphincterochilidae Zilch, 1960 (1886) (41)
- Family Thysanophoridae Pilsbry, 1926 (42)
- Family Trichodiscinidae H. Nordsieck, 1987 (11)
- Family Trissexodontidae H. Nordsieck, 1987 (46)
- Family Xanthonychidae Strebel & Pfeffer, 1880 (345)
- Tribe Canariellini Schileyko, 1991 accepted as Canariellidae Schileyko, 1991
- Genus Laxecostula Harzhauser & Neubauer, 2020 † (1)
- Superfamily Sagdoidea Pilsbry, 1895 (199)
- Infraorder Limacoidei (4 250)
- 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