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 (132 791)
- 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)
- Order Aillyida accepted as Achatinina
- Order Ellobiida (579)
- Order Gymnomorpha accepted as Systellommatophora
- Order Stylommatophora (24 766)
- Suborder Achatinina (2 900)
- Superfamily Achatinoidea Swainson, 1840 (1 329)
- Superfamily Streptaxoidea J. E. Gray, 1860 (1 571)
- Family Artemonidae Bourguignat, 1890 accepted as Streptaxinae J. E. Gray, 1860
- Family Diapheridae Panha & Naggs, 2010 (183)
- Family Enneidae Bourguignat, 1883 accepted as Enneinae Bourguignat, 1883
- Family Orthogibbidae Germain, 1921 accepted as Orthogibbinae Germain, 1921
- Family Streptaxidae J. E. Gray, 1860 (1 388)
- Subfamily Enneinae Bourguignat, 1883 (265)
- Subfamily Gibbinae Steenberg, 1936 accepted as Orthogibbinae Germain, 1921
- Subfamily Gonidominae Steenberg, 1936 accepted as Orthogibbinae Germain, 1921
- Subfamily Gulellinae Rowson, 2024 (548)
- Subfamily Marconiinae Schileyko, 2000 (49)
- Subfamily Odontartemoninae Schileyko, 2000 (39)
- Subfamily Orthogibbinae Germain, 1921 (165)
- Genus Acanthennea E. von Martens, 1898 (1)
- Genus Augustula Thiele, 1931 (1)
- Genus Careoradula Gerlach & van Bruggen, 1999 (1)
- Genus Conturbatia Gerlach, 2001 (1)
- Genus Gerlachina Rowson, 2024 (2)
- Genus Gibbulinella Wenz, 1920 (4)
- Genus Gibbus Montfort, 1810 (1)
- Genus Glabrennea Schileyko, 2000 (3)
- Genus Gonidomus Swainson, 1840 (1)
- Genus Gonospira Swainson, 1840 (34)
- Subgenus Gonospira (Microstrophia) Möllendorff, 1887 accepted as Microstrophia Möllendorff, 1887
- Species Gonospira (Microstrophia) cryptophora (Morelet, 1881) accepted as Juventigulella cryptophora (Morelet, 1881)
- Species Gonospira (Microstrophia) goudoti Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994 accepted as Microstrophia goudoti (Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994)
- Species Gonospira (Microstrophia) jacobsi O. L. Griffiths, 2000 accepted as Microstrophia jacobsi (O. L. Griffiths, 2000)
- Species Gonospira (Microstrophia) toudogi Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994 accepted as Microstrophia toudogi (Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994)
- Subgenus Gonospira (Orthogibbus) Germain, 1919 accepted as Gonospira Swainson, 1840
- Species Gonospira adamsiana (G. Nevill & H. Nevill, 1871)
- Species Gonospira bacillus (L. Pfeiffer, 1856)
- Species Gonospira barclayi (H. Adams, 1868)
- Species Gonospira bourguignati (Deshayes, 1863)
- Species Gonospira brevis (Morelet, 1867)
- Species Gonospira callifera (Morelet, 1860)
- Species Gonospira chloris Crosse, 1873
- Species Gonospira cirneensis Madge, 1946
- Species Gonospira cylindrella (H. Adams, 1868)
- Species Gonospira deshayesi (H. Adams, 1868)
- Species Gonospira dupontiana (G. Nevill, 1881)
- Species Gonospira dupontiana Crosse, 1873 accepted as Gonospira metableta Crosse, 1874
- Species Gonospira expatriata (Preston, 1910)
- Species Gonospira funicula accepted as Gonospira funiculus (L. Pfeiffer, 1842)
- Species Gonospira funiculus (L. Pfeiffer, 1842)
- Species Gonospira helodes (Morelet, 1875)
- Species Gonospira holostoma (Morelet, 1860)
- Species Gonospira larreyi Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994
- Species Gonospira madgei (Kennard, 1943)
- Species Gonospira majuscula (Morelet, 1878)
- Species Gonospira mauritiana (Morelet, 1860)
- Species Gonospira metablata (auctt.) accepted as Gonospira metableta Crosse, 1874
- Species Gonospira metableta Crosse, 1874
- Species Gonospira modiola (A. Férussac, 1821)
- Species Gonospira mondraini (H. Adams, 1868)
- Species Gonospira nevilli (H. Adams, 1867)
- Species Gonospira obesa (Kobelt, 1904)
- Species Gonospira palanga (R. P. Lesson, 1830)
- Species Gonospira producta (H. Adams, 1868)
- Species Gonospira raffrayi (Bourguignat, 1883)
- Species Gonospira rodriguezensis Crosse, 1873
- Species Gonospira striaticosta (Morelet, 1866)
- Species Gonospira superba (Pickford, 2019) †
- Species Gonospira teres (L. Pfeiffer, 1856)
- Species Gonospira testudiae Fischer-Piette, C. P. Blanc, F. Blanc & F. Salvat, 1994
- Species Gonospira turgidula (Deshayes, 1863)
- Species Gonospira uvula (Deshayes, 1863)
- Species Gonospira versipolis (L. Pfeiffer, 1841)
- Species Gonospira viaderi (Madge, 1938)
- Genus Idolum L. Pfeiffer, 1856 accepted as Gonidomus Swainson, 1840
- Genus Imperturbatia E. von Martens, 1898 (3)
- Genus Nevillia E. von Martens, 1880 accepted as Microstrophia Möllendorff, 1887
- Genus Orthogibbus Germain, 1919 accepted as Gonospira Swainson, 1840
- Genus Parvedentulina K. C. Emberton & Pearce, 2000 (105)
- Genus Plicadomus Swainson, 1840 (2)
- Genus Priodiscus E. von Martens, 1898 (3)
- Genus Pseudartemon Mabille, 1887 accepted as Haploptychius Kobelt, 1905
- Genus Seychellaxis Schileyko, 2000 (1)
- Genus Silhouettia Gerlach & van Bruggen, 1999 (1)
- Genus Stereostele Pilsbry, 1919 (1)
- Genus Webbia Odhner, 1932 accepted as Gibbulinella Wenz, 1920
- Subfamily Primigulellinae Rowson, 2024 (41)
- Subfamily Ptychotrematinae Pilsbry, 1919 accepted as Enneinae Bourguignat, 1883
- Subfamily Streptaxinae J. E. Gray, 1860 (276)
- Genus Campolaemus Pilsbry, 1892 (1)
- Genus Goniodomulus Harzhauser & Neubauer, 2016 † (1)
- Genus Huttonella L. Pfeiffer, 1856 accepted as Gulella (Huttonella) L. Pfeiffer, 1856
- Genus Oppenheimiella Pfeffer, 1930 † accepted as Pfefferiola Harzhauser & Neubauer, 2021 †
- Genus Panhartemis Siriboon, 2023 (2)
- Genus Pfefferiola Harzhauser & Neubauer, 2021 † (1)
- Family Streptostelidae Bourguignat, 1890 accepted as Enneinae Bourguignat, 1883
- Suborder Elasmognatha accepted as Succineoidei
- Suborder Helicina (21 626)
- 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