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 (132 708)
- 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 (1 827)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 646)
- Subclass Amphigastropoda † (387)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 590)
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 154)
- Infraclass "Lower Heterobranchia" (1 137)
- Infraclass Euthyneura (37 431)
- Subterclass Acteonimorpha (411)
- Subterclass Ringipleura (2 918)
- 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 (580)
- Order Gymnomorpha accepted as Systellommatophora
- Order Stylommatophora (24 762)
- Suborder Achatinina (2 899)
- Suborder Elasmognatha accepted as Succineoidei
- Suborder Helicina (21 623)
- Infraorder Arionoidei (139)
- Infraorder Clausilioidei (1 859)
- Infraorder Helicina incertae sedis (3 210)
- Infraorder Helicoidei (5 689)
- Infraorder Limacoidei (4 250)
- Infraorder Oleacinoidei (497)
- Infraorder Orthalicoidei (1 578)
- Superfamily Bulimuloidea Tryon, 1867 accepted as Orthalicoidea E. von Martens, 1860
- Superfamily Orthalicoidea E. von Martens, 1860 (1 578)
- Family Amphibulimidae P. Fischer, 1873 (109)
- Family Bothriembryontidae Iredale, 1937 (168)
- Family Bulimulidae Tryon, 1867 (940)
- Family Cyclodontinidae Salvador & Breure, 2023 (110)
- Family Liguidae Pilsbry, 1891 accepted as Orthalicidae E. von Martens, 1860
- Family Megaspiridae Pilsbry, 1904 (58)
- Family Orthalicidae E. von Martens, 1860 (108)
- Genus Aposcutalus Dutra & Leme, 1985 (1)
- Genus Chersina H. Beck, 1837 accepted as Liguus Montfort, 1810
- Genus Clathrorthalicus Strebel, 1909 (5)
- Genus Corona Albers, 1850 (8)
- Genus Hemibulimus E. von Martens, 1885 (2)
- Genus Kara Strebel, 1910 (6)
- Genus Laeorthalicus Strebel, 1909 accepted as Corona Albers, 1850
- Genus Liguellus Clench, 1946 accepted as Liguus Montfort, 1810
- Genus Liguus Montfort, 1810 (4)
- Subgenus Liguus (Hemibulimus) E. von Martens, 1885 accepted as Hemibulimus E. von Martens, 1885
- Subgenus Liguus (Liguellus) Clench, 1946 accepted as Liguus Montfort, 1810
- Subgenus Liguus (Liguus) Montfort, 1810 represented as Liguus Montfort, 1810
- Subgenus Liguus (Oxystrombus) Mörch, 1852 accepted as Liguus Montfort, 1810
- Species Liguus blainianus (Poey, 1852) accepted as Liguus fasciatus blainianus (Poey, 1852)
- Species Liguus crenatus (Swainson, 1821) accepted as Liguus fasciatus crenatus (Swainson, 1821)
- Subspecies Liguus crenatus aurantius Clench, 1929 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus barbouri Clench, 1929 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus capensis C. T. Simpson, 1920 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus caroli Bartsch, 1937 accepted as Liguus fasciatus caroli Bartsch, 1937
- Subspecies Liguus crenatus cingulatus C. T. Simpson, 1920 accepted as Liguus fasciatus cingulatus C. T. Simpson, 1920
- Subspecies Liguus crenatus eburneus C. T. Simpson, 1920 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus elliottensis Pilsbry, 1912 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus farnumi Clench, 1929 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus floridanus Clench, 1929 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus gloriasylvatica Doe, 1937 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus lossmanicus Pilsbry, 1912 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus luteus C. T. Simpson, 1920 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus marmoratus Pilsbry, 1912 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus matecumbensis Pilsbry, 1912 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus mosieri C. T. Simpson, 1920 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus nebulosus Doe, 1937 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus septentrionalis Pilsbry, 1912 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus subcrenatus Pilsbry, 1912 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Subspecies Liguus crenatus vacaensis C. T. Simpson, 1920 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Species Liguus fasciatus (O. F. Müller, 1774)
- Species Liguus flammellus Clench, 1934 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Species Liguus magnificus (L. Pfeiffer, 1848) accepted as Clathrorthalicus magnificus (L. Pfeiffer, 1848)
- Species Liguus murreus (Reeve, 1849)
- Species Liguus nobilis Clench & Aguayo, 1932 accepted as Liguus fasciatus (O. F. Müller, 1774)
- Species Liguus pictus (Reeve, 1842) accepted as Liguus fasciatus (O. F. Müller, 1774)
- Species Liguus poeyanus (L. Pfeiffer, 1857) accepted as Liguus vittatus (Swainson, 1822)
- Species Liguus solidus (Say, 1825) accepted as Liguus fasciatus solidus (Say, 1825)
- Species Liguus virgineus (Linnaeus, 1758)
- Species Liguus vittatus (Swainson, 1822)
- Genus Melaniorthalicus Strebel, 1909 accepted as Corona Albers, 1850
- Genus Myiorthalicus Strebel, 1909 accepted as Corona Albers, 1850
- Genus Ortalicus [sic] accepted as Orthalicus H. Beck, 1837
- Genus Orthalicinus P. Fischer & Crosse, 1875 accepted as Liguus Montfort, 1810
- Genus Orthalicus H. Beck, 1837 (40)
- Genus Oxystrombus Mörch, 1852 accepted as Liguus Montfort, 1810
- Genus Oxystyla Schlüter, 1838 accepted as Orthalicus H. Beck, 1837
- Genus Paraliguus Pilsbry, 1899 accepted as Corona Albers, 1850
- Genus Porphyrobaphe Shuttleworth, 1856 (6)
- Genus Quechua Strebel, 1910 (4)
- Genus Scholvienia Strebel, 1910 (15)
- Genus Sultana Shuttleworth, 1856 (17)
- Genus Thomsenia Strebel, 1910 accepted as Scholvienia Strebel, 1910
- Genus Zebra Shuttleworth, 1856 accepted as Orthalicus H. Beck, 1837
- Family Placostylidae Pilsbry, 1946 accepted as Placostylinae Pilsbry, 1946
- Family Simpulopsidae Schileyko, 1999 (61)
- Family Tomogeridae Jousseaume, 1877 (24)
- 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