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)
- Subterclass Sorbeoconcha (147)
- Superorder Hypsogastropoda
- Order Architaenioglossa (4 921)
- Order Caenogastropoda incertae sedis (7 701)
- Order Littorinimorpha (17 230)
- Order Neogastropoda (23 828)
- Superfamily Buccinoidea Rafinesque, 1815 (5 270)
- Superfamily Cancellarioidea Forbes & Hanley, 1851 accepted as Volutoidea Rafinesque, 1815
- Superfamily Conoidea J. Fleming, 1822 (8 744)
- Family Acusidae J. E. Gray, 1853 accepted as Terebridae Mörch, 1852
- Family Borsoniidae Bellardi, 1875 (577)
- Family Bouchetispiridae Kantor, E. E. Strong & Puillandre, 2012 (2)
- Family Clathurellidae H. Adams & A. Adams, 1858 (337)
- Family Clavatulidae J. E. Gray, 1853 (441)
- Family Clavidae T. L. Casey, 1904 accepted as Drilliidae Olsson, 1964
- Family Clionellidae W. Stimpson, 1865 accepted as Clavatulidae J. E. Gray, 1853
- Family Cochlespiridae A. W. B. Powell, 1942 (114)
- Family Conidae J. Fleming, 1822 (1 396)
- Family Conilithidae J. K. Tucker & M. Tenorio, 2009 accepted as Conidae J. Fleming, 1822
- Family Conoidea incertae sedis (330)
- Family Conorbidae De Gregorio, 1880 (19)
- Family Conusidae J. Fleming, 1822 accepted as Conidae J. Fleming, 1822
- Family Cryptoconidae Cossmann, 1896 † (23)
- Family Drilliidae Olsson, 1964 (779)
- Family Fusiturridae Abdelkrim, Aznar-Cormano, Fedosov, Kantor, Lozouet, Phuong, Zaharias & Puillandre, 2018 (20)
- Family Horaiclavidae Bouchet, Kantor, Sysoev & Puillandre, 2011 (315)
- Family Mangeliidae P. Fischer, 1883 (1 069)
- Family Marshallenidae Abdelkrim, Aznar-Cormano, Fedosov, Kantor, Lozouet, Phuong, Zaharias & Puillandre, 2018 (5)
- Family Melatomidae Gill, 1871 accepted as Clavatulidae J. E. Gray, 1853
- Family Mitrolumnidae Sacco, 1904 accepted as Mitromorphidae T. L. Casey, 1904
- Family Mitromorphidae T. L. Casey, 1904 (221)
- Genus Anarithma Iredale, 1916 (25)
- Genus Arielia Shasky, 1961 (2)
- Genus Ariella [sic] accepted as Arielia Shasky, 1961
- Genus Citharopsis Pease, 1868 accepted as Anarithma Iredale, 1916
- Genus Clinomitra Bellardi, 1889 † accepted as Mitromorpha P. P. Carpenter, 1865
- Genus Cymakra J. A. Gardner, 1938 (3)
- Genus Diptychomitra Bellardi, 1888 † accepted as Mitromorpha P. P. Carpenter, 1865
- Genus Helenella T. L. Casey, 1904 accepted as Mitromorpha P. P. Carpenter, 1865
- Genus Itia Marwick, 1931 † (1)
- Genus Lovellona Iredale, 1917 (6)
- Genus Maorimorpha A. W. B. Powell, 1939 (3)
- Genus Minipyrene Coomans, 1967 accepted as Mitromorpha P. P. Carpenter, 1865
- Genus Mitramorpha [sic] accepted as Mitromorpha P. P. Carpenter, 1865
- Genus Mitrellatoma A. W. B. Powell, 1942 † (1)
- Genus Mitrithara Hedley, 1922 accepted as Mitromorpha P. P. Carpenter, 1865
- Subgenus Mitrithara (Itia) Marwick, 1931 accepted as Itia Marwick, 1931 †
- Species Mitrithara axiscalpta (Verco, 1909) accepted as Mitromorpha axiscalpta Verco, 1909
- Species Mitrithara barrierensis A. W. B. Powell, 1942 accepted as Mitromorpha barrierensis (A. W. B. Powell, 1942)
- Species Mitrithara bassiana Gabriel, 1956 accepted as Mitromorpha bassiana (Gabriel, 1956)
- Species Mitrithara benthicola (Dell, 1962) accepted as Mitromorpha benthicola (Dell, 1962)
- Species Mitrithara columnaria Hedley, 1922 accepted as Mitromorpha columnaria (Hedley, 1922)
- Species Mitrithara fenestrata A. W. B. Powell, 1944 † accepted as Mitromorpha fenestrata (A. W. B. Powell, 1944) †
- Species Mitrithara formosa Marwick, 1931 † accepted as Mitromorpha formosa (Marwick, 1931) †
- Species Mitrithara granulifera A. W. B. Powell, 1937 accepted as Mitromorpha granulifera (A. W. B. Powell, 1937)
- Species Mitrithara granum Marwick, 1928 † accepted as Mitromorpha granum (Marwick, 1928) †
- Species Mitrithara macphersonae Gabriel, 1956 accepted as Mitromorpha macphersonae (Gabriel, 1956)
- Species Mitrithara megale Chapple, 1941 † accepted as Mitromorpha megale (Chapple, 1941) †
- Species Mitrithara proles Hedley, 1922 accepted as Mitromorpha proles (Hedley, 1922)
- Species Mitrithara regis A. W. B. Powell, 1937 accepted as Mitromorpha regis (A. W. B. Powell, 1937)
- Species Mitrithara sutherlandica A. W. B. Powell, 1942 † accepted as Mitromorpha sutherlandica (A. W. B. Powell, 1942) †
- Species Mitrithara waitakiensis A. W. B. Powell, 1942 † accepted as Mitromorpha waitakiensis (A. W. B. Powell, 1942) †
- Genus Mitrolumna Bucquoy, Dautzenberg & Dollfus, 1883 accepted as Mitromorpha (Mitrolumna) Bucquoy, Dautzenberg & Dollfus, 1883 (11)
- Genus Mitromorpha P. P. Carpenter, 1865 (152)
- Genus Mitromorphidae incertae sedis
- Genus Scrinium Hedley, 1922 (17)
- Genus Vexiariella Shuto, 1983 accepted as Arielia Shasky, 1961
- Family Pervicaciidae Rudman, 1969 accepted as Terebridae Mörch, 1852
- Family Pleurotomidae J. E. Gray, 1838 accepted as Turridae H. Adams & A. Adams, 1853 (1838)
- Family Pseudomelatomidae J. P. E. Morrison, 1966 (787)
- Family Raphitomidae Bellardi, 1875 (1 166)
- Family Strictispiridae J. H. McLean, 1971 accepted as Pseudomelatomidae J. P. E. Morrison, 1966
- Family Taranteconidae J. K. Tucker & M. Tenorio, 2009 accepted as Conidae J. Fleming, 1822
- Family Terebridae Mörch, 1852 (750)
- Family Thatcheriidae A. W. B. Powell, 1942 accepted as Raphitomidae Bellardi, 1875
- Family Turridae H. Adams & A. Adams, 1853 (1838) (393)
- Subfamily Andoniinae Vera-Peláez, 2002 † accepted as Raphitomidae Bellardi, 1875
- Subfamily Crassispirinae J. H. McLean, 1971 accepted as Pseudomelatomidae J. P. E. Morrison, 1966
- Subfamily Cytharinae Thiele, 1929 accepted as Mangeliidae P. Fischer, 1883
- Subfamily Daphnellinae T. L. Casey, 1904 accepted as Raphitomidae Bellardi, 1875
- Subfamily Diptychomitrinae Bellardi, 1888 accepted as Mitromorphidae T. L. Casey, 1904
- Subfamily Oenopotinae Bogdanov, 1987 accepted as Mangeliidae P. Fischer, 1883
- Subfamily Pleurotomellinae F. Nordsieck, 1968 accepted as Raphitomidae Bellardi, 1875
- Subfamily Pseudotominae Bellardi, 1875 accepted as Borsoniidae Bellardi, 1875
- Subfamily Pusionellinae J. E. Gray, 1853 accepted as Clavatulidae J. E. Gray, 1853
- Subfamily Taraninae T. L. Casey, 1904 accepted as Raphitomidae Bellardi, 1875
- Subfamily Turriculinae A. W. B. Powell, 1942 accepted as Clavatulidae J. E. Gray, 1853
- Subfamily Zemaciinae Sysoev, 2003 accepted as Borsoniidae Bellardi, 1875
- Subfamily Zonulispirinae J. H. McLean, 1971 accepted as Pseudomelatomidae J. P. E. Morrison, 1966
- Superfamily Mitroidea Swainson, 1831 (634)
- Superfamily Muricacea accepted as Muricoidea Rafinesque, 1815
- Superfamily Muricoidea Rafinesque, 1815 (2 944)
- Superfamily Neogastropoda incertae sedis (1 151)
- Superfamily Olivoidea Latreille, 1825 (741)
- Superfamily Pholidotomoidea Cossmann, 1896 † (57)
- Superfamily Pseudolivoidea De Gregorio, 1880 accepted as Olivoidea Latreille, 1825
- Superfamily Pyrifusoidea Bandel & Dockery, 2001 † accepted as Pholidotomoidea Cossmann, 1896 †
- Superfamily Sarganoidea Stephenson, 1923 † accepted as Pholidotomoidea Cossmann, 1896 †
- Superfamily Toxoglossa Troschel, 1848 accepted as Conoidea J. Fleming, 1822
- Superfamily Turbinelloidea Swainson, 1835 (1 256)
- Superfamily Volutoidea Rafinesque, 1815 (3 031)
- Order Stenoglossa accepted as Neogastropoda
- Subclass Gastropoda incertae sedis (313)
- Subclass Heterobranchia (39 225)
- 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