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- 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)
- Order Gymnomorpha accepted as Systellommatophora
- Order Stylommatophora (24 764)
- Suborder Achatinina (2 899)
- Suborder Elasmognatha accepted as Succineoidei
- Suborder Helicina (21 625)
- Infraorder Arionoidei (140)
- 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)
- 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)
- Subgenus Fruticicola (Cressa) Westerlund, 1889 accepted as Metafruticicola Ihering, 1892
- Subgenus Fruticicola (Edentiella) Polinski, 1929 accepted as Edentiella Poliński, 1929
- Subgenus Fruticicola (Filicinella) Poliński, 1929 accepted as Edentiella (Filicinella) Poliński, 1929
- Subgenus Fruticicola (Karaftohelix) Pilsbry, 1927 accepted as Karaftohelix Pilsbry, 1927
- Subgenus Fruticicola (Koreanohadra) Kuroda & T. Habe, 1949 accepted as Fruticicola Held, 1838
- Subgenus Fruticicola (Latonia) Westerlund, 1889 accepted as Metafruticicola Ihering, 1892
- Subgenus Fruticicola (Leucochroopsis) O. Boettger, 1908 † accepted as Leucochroopsis O. Boettger, 1908 †
- Subgenus Fruticicola (Leucozonella) Lindholm, 1927 accepted as Leucozonella Lindholm, 1927
- Subgenus Fruticicola (Monachella) Gude & B. B. Woodward, 1921 accepted as Monachoides Gude & B. B. Woodward, 1921
- Subgenus Fruticicola (Petasiella) Gude & B. B. Woodward, 1921 accepted as Petasiella Gude & B. B. Woodward, 1921
- Subgenus Fruticicola (Ponentina) P. Hesse, 1921 accepted as Ponentina P. Hesse, 1921
- Subgenus Fruticicola (Theba) Risso, 1826 accepted as Theba Risso, 1826
- Subgenus Fruticicola (Trichia) W. Hartmann, 1840 accepted as Trochulus Chemnitz, 1786
- Subgenus Fruticicola (Westerlundia) Kobelt, 1904 accepted as Metafruticicola (Westerlundia) Kobelt, 1904
- Species Fruticicola adriana F. W. Hutton, 1883 accepted as Allodiscus adriana (F. W. Hutton, 1883)
- Species Fruticicola alaica (Kuznetsov, 1998)
- Species Fruticicola almaatina Skvortzov, 1940
- Species Fruticicola almaatini Skvortzov, 1940 accepted as Fruticicola almaatina Skvortzov, 1940
- Species Fruticicola alveolus (F. Sandberger, 1873) †
- Species Fruticicola assaortina Pollonera, 1898 accepted as Lejeania isseli (Morelet, 1872)
- Species Fruticicola balgutensis Lindholm, 1927 accepted as Leucozonella hypophaea (Lindholm, 1927)
- Species Fruticicola biconica Eder, 1917 accepted as Raeticella biconica (Eder, 1917)
- Species Fruticicola bielzi (E. A. Bielz, 1860) accepted as Edentiella bielzi (E. A. Bielz, 1860)
- Species Fruticicola bihungae Pollonera, 1907 accepted as Halolimnohelix bihungae (Pollonera, 1907)
- Species Fruticicola bilaticincta (E. von Martens, 1879)
- Species Fruticicola birdeana Pallary, 1939
- Species Fruticicola boevi (Uvalieva, 1967)
- Species Fruticicola bujungolensis Pollonera, 1907 accepted as Halolimnohelix bujungolensis (Pollonera, 1907)
- Species Fruticicola cavimargo (E. von Martens, 1879)
- Species Fruticicola concinna (A. Adams, 1868)
- Species Fruticicola conospira Lindholm, 1927 accepted as Leucozonella caryodes (Westerlund, 1896)
- Species Fruticicola czarnohorica Polinski, 1924 accepted as Pseudotrichia rubiginosa (Rossmässler, 1838)
- Species Fruticicola dichrozona (E. von Martens, 1885)
- Species Fruticicola edentula (Draparnaud, 1805) accepted as Edentiella edentula (Draparnaud, 1805)
- Species Fruticicola erjaveci (Brusina, 1870) accepted as Trochulus erjaveci (Brusina, 1870)
- Species Fruticicola fedtschenkoi (E. von Martens, 1874)
- Species Fruticicola franciscanorum (Gredler, 1886) accepted as Trichochloritis hungerfordiana franciscanorum (Gredler, 1886)
- Species Fruticicola fruticum (O. F. Müller, 1774)
- Species Fruticicola gemina Proćków, 2022
- Species Fruticicola globosa (K. H. Jones & Preston, 1904)
- Species Fruticicola globuliformis Lindholm, 1931 accepted as Leucozonella globuliformis (Lindholm, 1931)
- Species Fruticicola helvola (L. Pfeiffer, 1853)
- Species Fruticicola hessleriana (Pfeffer, 1930) †
- Species Fruticicola hispida (Linnaeus, 1758) accepted as Trochulus hispidus (Linnaeus, 1758)
- Species Fruticicola hypophaea Lindholm, 1927 accepted as Leucozonella hypophaea (Lindholm, 1927)
- Species Fruticicola intermedia (Rymzhanov, 1983)
- Species Fruticicola koreana (L. Pfeiffer, 1850)
- Species Fruticicola lantzi Lindholm, 1927
- Species Fruticicola leucotaenia Lindholm, 1927 accepted as Ponsadenia duplocincta (E. von Martens, 1879)
- Species Fruticicola mesoleuca (E. von Martens, 1882) accepted as Leucozonella mesoleuca (E. von Martens, 1882)
- Species Fruticicola mica Tzvetkova, 1950 accepted as Leucozonella mica (Tzvetkova, 1950)
- Species Fruticicola necopinata (Tzvetkov, 1941) accepted as Fruticicola plectotropis necopinata (Tzvetkov, 1941)
- Species Fruticicola perlucens (O. von Rosen, 1903)
- Species Fruticicola phaeozona (E. von Martens, 1874)
- Species Fruticicola plectotropis (E. von Martens, 1864)
- Species Fruticicola pseudoperlucens Abdulazizova, Pazilov, Sohail & Umarov, 2023
- Species Fruticicola reformata Gredler, 1892
- Species Fruticicola riatana Pallary, 1920
- Species Fruticicola rubens (E. von Martens, 1874) accepted as Leucozonella rubens (E. von Martens, 1874)
- Species Fruticicola russoi Pallary, 1928
- Species Fruticicola saxatilis (Tzvetkov, 1941) accepted as Fruticicola plectotropis saxatilis (Tzvetkov, 1941)
- Species Fruticicola scalaris (Tzvetkov, 1941) accepted as Fruticicola plectotropis scalaris (Tzvetkov, 1941)
- Species Fruticicola schrenckii (Middendorff, 1850)
- Species Fruticicola scioana Pollonera, 1887 accepted as Debeauxhelix scioana (Pollonera, 1887)
- Species Fruticicola scythica (Westerlund, 1898)
- Species Fruticicola similis Proćków & Sîrbu, 2022
- Species Fruticicola sinistrorsa Tzvetkov, 1938
- Species Fruticicola skwortzowi Tzvetkov, 1940
- Species Fruticicola squamulosa (Izzatullaev & Schileyko, 1980)
- Species Fruticicola stoliczkana (L. Pfeiffer, 1877)
- Subspecies Fruticicola stoliczkana chuika (Egorov, 1997)
- Subspecies Fruticicola stoliczkana pavlovskii (I. M. Likharev, 1955)
- Subspecies Fruticicola stoliczkana stoliczkana (G. Nevill, 1878)
- Species Fruticicola strigelloides Pollonera, 1887 accepted as Lejeania strigelloides (Pollonera, 1887)
- Species Fruticicola tomyris Lindholm, 1927
- Species Fruticicola touranensis (Souleyet, 1842) accepted as Acusta tourannensis (Souleyet, 1842)
- Species Fruticicola transbaicalia (Schileyko, 1978)
- Species Fruticicola transsylvanica (Westerlund, 1876) accepted as Lozekia transsilvanica (Westerlund, 1876)
- Species Fruticicola tzwetkovi (Uvalieva & Soboleva, 1973)
- Species Fruticicola unidentata (Draparnaud, 1805) accepted as Petasina unidentata (Draparnaud, 1805)
- Species Fruticicola villosa (Draparnaud, 1805) accepted as Trochulus villosus (Draparnaud, 1805)
- Species Fruticicola waldemari A. J. Wagner, 1912 accepted as Xerocampylaea waldemari (A. J. Wagner, 1912)
- Species Fruticicola zhecsen (Rymzhanov, 1979)
- Species Fruticicola zhecseni (Rymzhanov, 1979) accepted as Fruticicola zhecsen (Rymzhanov, 1979)
- 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