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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)
Subclass Gastropoda incertae sedis (308)
Subclass Heterobranchia (39 156)
Infraclass "Lower Heterobranchia" (1 137)
Infraclass Euthyneura (37 433)
Subterclass Acteonimorpha (411)
Subterclass Ringipleura (2 917)
Subterclass Tectipleura (34 105)
Superorder Acochlidiimorpha (48)
Superorder Ascoglossa accepted as Sacoglossa
Superorder Basommatophora accepted as Hygrophila
Superorder Eupulmonata (25 569)
Superorder Hygrophila (2 005)
Superfamily Acroloxoidea Thiele, 1931 accepted as Lymnaeoidea Rafinesque, 1815
Superfamily Chilinoidea Dall, 1870 (61)
Superfamily Lymnaeoidea Rafinesque, 1815 (1 944)
Family Acroloxidae Thiele, 1931 (58)
Family Ancylidae Rafinesque, 1815 accepted as Ancylinae Rafinesque, 1815
Family Bulinidae P. Fischer & Crosse, 1880 (72)
Family Burnupiidae Albrecht, 2017 (22)
Family Clivunellidae Kochansky-Devidé & Slišković, 1972 † (4)
Family Laevapicidae Hannibal, 1914 accepted as Planorbidae Rafinesque, 1815
Family Lancidae Hannibal, 1914 accepted as Lancini Hannibal, 1914
Family Limnophysidae W. Dybowski, 1903 accepted as Lymnaeidae Rafinesque, 1815
Family Lymnaeidae Rafinesque, 1815 (536)
Family Physidae Fitzinger, 1833 (210)
Family Planorbidae Rafinesque, 1815 (1 042)
Subfamily Ancylinae Rafinesque, 1815 (141)
Subfamily Miratestinae P. Sarasin & F. Sarasin, 1897 (58)
Tribe Ameriannini Zilch, 1959 accepted as Miratestinae P. Sarasin & F. Sarasin, 1897
Genus Ameria H. Adams, 1861 accepted as Amerianna Strand, 1928
Genus Amerianna Strand, 1928 (12)
Genus Ameriella Cotton, 1943 accepted as Amerianna Strand, 1928
Genus Ancylastrum Bourguignat, 1853 (2)
Genus Bayardella J. B. Burch, 1977 (2)
Genus Glyptamoda Iredale, 1943 accepted as Glyptophysa Crosse, 1872
Genus Glyptophysa Crosse, 1872 (30)
Genus Isidorella Tate, 1896 (5)
Genus Kessneria J. C. Walker & Ponder, 2001 (1)
Genus Leichhardtia J. C. Walker, 1988 (1)
Genus Lenameria Iredale, 1943 accepted as Glyptophysa Crosse, 1872
Genus Miratesta P. Sarasin & F. Sarasin, 1897 (1)
Genus Mutalena Iredale, 1944
Genus Oppletora Iredale, 1943 accepted as Glyptophysa (Oppletora) Iredale, 1943
Genus Patelloplanorbis Hubendick, 1957 (1)
Genus Physastra Tapparone Canefri, 1883 accepted as Glyptophysa Crosse, 1872 (1)
Genus Protancylus P. Sarasin & F. Sarasin, 1897 (2)
Subgenus Protancylus (Laevapex) B. Walker, 1903 accepted as Laevapex B. Walker, 1903
Species Protancylus adhaerens P. Sarasin & F. Sarasin, 1897
Species Protancylus noumeensis (Crosse, 1871) accepted as Pettancylus noumeensis (Crosse, 1871)
Species Protancylus pileolus P. Sarasin & F. Sarasin, 1897
Species Protancylus reticulatus (Gassies, 1865) accepted as Ancylus reticulatus Gassies, 1865
Genus Tasmadora Iredale, 1943 accepted as Glyptophysa (Glyptophysa) Crosse, 1872
Subfamily Planorbidae incertae sedis (57)
Subfamily Planorbinae Rafinesque, 1815 (785)
Subfamily Rhodacmeinae B. Walker, 1917 accepted as Ancylini Rafinesque, 1815
Subfamily Segmentininae F. C. Baker, 1945 accepted as Segmentinini F. C. Baker, 1945
Genus Hypsogyra Lindholm, 1927 accepted as Planorbella Haldeman, 1843
Genus Theratodocion D. S. Brown & Verdcourt, 1998 (1)
Genus Zalophancylus Hannibal, 1912 †
Family Rhodacmeidae B. Walker, 1917 accepted as Ancylinae Rafinesque, 1815
Superfamily Planorboidea Rafinesque, 1815 accepted as Lymnaeoidea Rafinesque, 1815
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