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 (133 273)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 082)
- Class Caudofoveata (143)
- Class Cephalopoda (1 917)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (103 018)
- Subclass Amphigastropoda † (434)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 827)
- Subclass Gastropoda incertae sedis (313)
- Subclass Heterobranchia (39 225)
- Infraclass "Lower Heterobranchia" (1 140)
- Infraclass Euthyneura (37 498)
- Subterclass Acteonimorpha (413)
- Subterclass Ringipleura (2 917)
- Subterclass Tectipleura (34 168)
- Superorder Acochlidiimorpha (48)
- Superorder Ascoglossa accepted as Sacoglossa
- Superorder Basommatophora accepted as Hygrophila
- Superorder Eupulmonata (25 623)
- Order Aillyida accepted as Achatinina
- Order Ellobiida (579)
- Order Gymnomorpha accepted as Systellommatophora
- Order Stylommatophora (24 820)
- Suborder Achatinina (2 912)
- Suborder Elasmognatha accepted as Succineoidei
- Suborder Helicina (21 668)
- Infraorder Arionoidei (140)
- Infraorder Clausilioidei (1 859)
- Superfamily Clausilioidea J. E. Gray, 1855 (1 859)
- Family Clausiliidae J. E. Gray, 1855 (1 762)
- Subfamily Alopiinae A. J. Wagner, 1913 (434)
- Tribe Alopiini A. J. Wagner, 1913 (103)
- Tribe Cochlodinini Lindholm, 1925 (1923) (42)
- Tribe Delimini R. Brandt, 1956 (62)
- Tribe Medorini H. Nordsieck, 1997 (227)
- Genus Agathylla H. Adams & A. Adams, 1855 (12)
- Genus Albinaria Vest, 1867 (122)
- Genus Angiticosta H. Nordsieck, 1977 accepted as Carinigera Möllendorff, 1873
- Genus Bathyclista O. Boettger, 1885 accepted as Isabellaria Vest, 1867
- Genus Callopleura Pallary, 1939 accepted as Cristataria Vest, 1867
- Genus Carinigera Möllendorff, 1873 (20)
- Genus Cathariella Lindholm, 1925 accepted as Albinaria (Cathariella) Lindholm, 1925
- Genus Charites Westerlund, 1901 accepted as Isabellaria Vest, 1867
- Genus Clausilina Ehrenberg, 1831 accepted as Cristataria Vest, 1867
- Genus Cristaria Westerlund, 1884 accepted as Cristataria Vest, 1867
- Genus Cristataria Vest, 1867 (29)
- Genus Graeca O. Boettger, 1877 accepted as Albinaria (Graeca) O. Boettger, 1877
- Genus Inchoatia E. Gittenberger & Uit de Weerd, 2006 (3)
- Genus Interstriata O. Boettger, 1878 accepted as Albinaria (Mirabellina) O. Boettger, 1878
- Genus Isabellaria Vest, 1867 (12)
- Genus Lamellifera Monterosato, 1892 accepted as Muticaria Lindholm, 1925
- Genus Lampedusa O. Boettger, 1877 (3)
- Genus Leucostigma A. J. Wagner, 1919 (1)
- Genus Lopadusaria Monterosato, 1892 accepted as Lampedusa O. Boettger, 1877
- Genus Medora H. Adams & A. Adams, 1855 (17)
- Subgenus Medora (Mundaria) Lindholm, 1924 accepted as Albinaria Vest, 1867
- Subgenus Medora (Westerlundella) Lindholm, 1924 accepted as Cristataria Vest, 1867
- Species Medora adensameri H. Nordsieck, 2009
- Species Medora agnata (L. Pfeiffer, 1842)
- Species Medora albescens (Menke, 1830) accepted as Medora macascarensis albescens (Menke, 1830)
- Species Medora almissana (Küster, 1847)
- Subspecies Medora almissana almissana (Küster, 1847)
- Subspecies Medora almissana mariae H. Nordsieck, 1970
- Subspecies Medora almissana schmidti H. Nordsieck, 1970
- Species Medora armata (Küster, 1844)
- Species Medora contracta (Rossmässler, 1842)
- Species Medora dalmatina (Rossmässler, 1835)
- Species Medora delimaeformis H. Nordsieck, 1970 accepted as Medora agnata agnata (L. Pfeiffer, 1842)
- Species Medora eris (L. Pfeiffer, 1866)
- Species Medora garganensis (A. J. Wagner, 1918)
- Species Medora hiltrudae H. Nordsieck, 1970
- Species Medora italiana (Küster, 1847)
- Species Medora lesinensis (Küster, 1847)
- Species Medora macascarensis (G. B. Sowerby I, 1828)
- Species Medora milettiana Fo. Giusti, 1967
- Species Medora pollinensis H. Nordsieck, 2012
- Species Medora proxima (Walderdorff, 1864)
- Species Medora punctulata (Küster, 1850)
- Species Medora stenostoma (Rossmässler, 1839)
- Genus Medorella B. B. Woodward, 1924 accepted as Medora H. Adams & A. Adams, 1855
- Genus Mundaria Lindholm, 1924 accepted as Albinaria (Cathariella) Lindholm, 1925
- Genus Muticaria Lindholm, 1925 (5)
- Genus Naevosa O. Boettger, 1878 accepted as Albinaria (Graja) O. Boettger, 1878
- Genus Olympicosta H. Nordsieck, 1972 accepted as Carinigera Möllendorff, 1873
- Genus Pistillum O. Boettger, 1892 accepted as Albinaria (Laconica) O. Boettger, 1878
- Genus Priodelima A. J. Wagner, 1924 accepted as Albinaria (Cretica) O. Boettger, 1878
- Genus Protalbinaria A. J. Wagner, 1923 accepted as Isabellaria Vest, 1867
- Genus Sericata O. Boettger, 1878 accepted as Isabellaria Vest, 1867
- Genus Strigilodelima A. J. Wagner, 1924 (2)
- Genus Vallatia E. Gittenberger & Uit de Weerd, 2006 (1)
- Genus Venusta O. Boettger, 1877 accepted as Isabellaria Vest, 1867
- Subfamily Clausiliinae J. E. Gray, 1855 (288)
- Subfamily Cochlodininae Lindholm, 1925 accepted as Cochlodinini Lindholm, 1925 (1923)
- Subfamily Constrictinae H. Nordsieck, 1981 † (7)
- Subfamily Eualopiinae H. Nordsieck, 1978 † (30)
- Subfamily Euxininae I. M. Likharev, 1962 accepted as Clausiliinae J. E. Gray, 1855
- Subfamily Garnieriinae C. R. Boettger, 1926 (61)
- Subfamily Laminiferinae Wenz, 1923 (24)
- Subfamily Mentissoideinae Lindholm, 1924 accepted as Mentissoideini Lindholm, 1924
- Subfamily Neniinae Wenz, 1923 (14)
- Subfamily Peruiniinae H. Nordsieck, 2005 (144)
- Subfamily Phaedusinae A. J. Wagner, 1922 (758)
- Subfamily Serrulininae Ehrmann, 1927 accepted as Serrulinini Ehrmann, 1927
- Subfamily Synprosphyminae H. Nordsieck, 2007 accepted as Phaedusinae A. J. Wagner, 1922
- Genus Cirrobasis Conrad, 1874 † (1)
- Genus Dactylius F. Sandberger, 1872 † accepted as Filholia Bourguignat, 1877 †
- Genus Dactylomorpha Gude, 1911 † accepted as Filholia Bourguignat, 1877 †
- Genus Dextroformosana O. Boettger & Schmacker, 1894 accepted as Formosana O. Boettger, 1877
- Genus Dextrospira Hrubesch, 1965 † (1)
- Genus Distortiphaedusa Grego & Szekeres, 2011 accepted as Oospira (Distortiphaedusa) Grego & Szekeres, 2011
- Genus Pirostoma Möllendorff, 1873 accepted as Macrogastra W. Hartmann, 1841
- Family Filholiidae Wenz, 1923 † (82)
- Family Palaeostoidae H. Nordsieck, 1986 † (15)
- Infraorder Helicina incertae sedis (3 210)
- Infraorder Helicoidei (5 698)
- Infraorder Limacoidei (4 247)
- Infraorder Oleacinoidei (497)
- Infraorder Orthalicoidei (1 587)
- Infraorder Partuloinei accepted as Pupilloidei
- Infraorder Pupilloidei (3 466)
- Infraorder Rhytidoidei (580)
- 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 (2 009)
- 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 (1 039)
- 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 (109)
- Infraclass Opisthobranchia
- Infraclass Pulmonata
- Subclass Neomphaliones accepted as Vetigastropoda
- Subclass Neritimorpha (1 916)
- Subclass Orthogastropoda represented as Gastropoda
- Subclass Patellogastropoda (514)
- Subclass Prosobranchia
- Subclass Psilogastropoda represented as Gastropoda
- Subclass Vetigastropoda (6 789)
- 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