Between brackets is the number of accepted species
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- Mollusca (132 754)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (24 992)
- Class Caudofoveata (143)
- Class Cephalopoda (1 832)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 679)
- Subclass Amphigastropoda † (387)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 623)
- Subterclass Sorbeoconcha (147)
- Superorder Hypsogastropoda
- Order Architaenioglossa (4 917)
- Order Caenogastropoda incertae sedis (7 675)
- Order Littorinimorpha (17 171)
- Order Neogastropoda (23 713)
- Superfamily Buccinoidea Rafinesque, 1815 (5 253)
- Family Alectrionidae Dall, 1908 accepted as Nassariinae Iredale, 1916 (1835)
- Family Anachidae A. N. Golikov & Starobogatov, 1972 accepted as Atiliinae Cossmann, 1901
- Family Arculariidae Iredale, 1915 accepted as Nassariinae Iredale, 1916 (1835)
- Family Austrosiphonidae Cotton & Godfrey, 1938 (58)
- Family Belomitridae Kantor, Puillandre, Rivasseau & Bouchet, 2012 (32)
- Family Beringiidae A. N. Golikov & Starobogatov, 1975 accepted as Beringiinae A. N. Golikov & Starobogatov, 1975
- Family Buccinanopsidae Galindo, Puillandre, Lozouet & Bouchet, 2016 (7)
- Family Buccinidae Rafinesque, 1815 (512)
- Family Buccinoidea incertae sedis (154)
- Family Buccinulidae H. J. Finlay, 1928 accepted as Tudiclidae Cossmann, 1901
- Family Busyconidae Wade, 1917 (1867) (33)
- Family Cassidulidae Gray, 1854 accepted as Melongenidae Gill, 1871 (1854)
- Family Chauvetiidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021 (61)
- Family Colidae J. E. Gray, 1857 (32)
- Family Colubrariidae Dall, 1904 (162)
- Family Columbellidae Swainson, 1840 (1 201)
- Family Cominellidae J. E. Gray, 1857 (76)
- Family Cyclopsidae Chenu, 1859 accepted as Nassariinae Iredale, 1916 (1835)
- Family Cyrtulidae MacDonald, 1869 accepted as Fusininae Wrigley, 1927
- Family Dolicholatiridae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021 (43)
- Family Donovaniidae T. L. Casey, 1904 accepted as Chauvetiidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021
- Family Echinofulguridae Petuch, 1994 † (15)
- Family Eosiphonidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021 (72)
- Family Fasciolariidae Gray, 1853 (883)
- Subfamily Clavilithinae Vermeij & M. A. Snyder, 2018 † accepted as Clavilithidae Vermeij & M. A. Snyder, 2018 †
- Subfamily Fasciolariinae Gray, 1853 (200)
- Subfamily Fusininae Wrigley, 1927 (441)
- Genus Aegeofusinus Russo, 2017 accepted as Pseudofusus Monterosato, 1884
- Genus Africofusus Vermeij & M. A. Snyder, 2018 (5)
- Genus Amiantofusus Fraussen, Kantor & Hadorn, 2007 (9)
- Genus Angulofusus Fedosov & Kantor, 2012 (1)
- Genus Angustifusus Vermeij & M. A. Snyder, 2018 † (7)
- Genus Apertifusus Vermeij & M. A. Snyder, 2018 (7)
- Genus Aptysis [sic] accepted as Aptyxis Troschel, 1868
- Genus Aptyxis Troschel, 1868 (4)
- Genus Araiofusus P. Callomon & M. A. Snyder, 2017 (3)
- Genus Ariefusus Vermeij & M. A. Snyder, 2018 (2)
- Genus Aristofusus Vermeij & M. A. Snyder, 2018 (10)
- Genus Barbarofusus Grabau & Shimer, 1909 (3)
- Genus Buccinofusus Conrad, 1868 † accepted as Conradconfusus M. A. Snyder, 2002 †
- Genus Callifusus Vermeij & M. A. Snyder, 2018 (2)
- Genus Carinofusus Ceulemans, Landau & Van Dingenen, 2014 † (1)
- Genus Chryseofusus Hadorn & Fraussen, 2003 (21)
- Genus Conradconfusus M. A. Snyder, 2002 † (1)
- Genus Cyrtulus Hinds, 1843 (8)
- Genus Enigmofusus Vermeij & M. A. Snyder, 2018 (3)
- Genus Eofusus Vermeij & M. A. Snyder, 2018 † (7)
- Genus Exilifusus Gabb, 1877 † accepted as Fusinus Rafinesque, 1815
- Genus Falsicolus H. J. Finlay, 1930 † (11)
- Genus Fraudifusinus Harzhauser, Landau & Vermeij, 2024 † (3)
- Genus Fusinus Rafinesque, 1815 (116)
- Genus Fusus Bruguière, 1789 accepted as Fusinus Rafinesque, 1815
- Genus Fusus Röding, 1798
- Genus Gemmocolus P. A. Maxwell, 1992 † (2)
- Genus Glaphyrina H. J. Finlay, 1926 (4)
- Genus Goniofusus Vermeij & M. A. Snyder, 2018 (9)
- Genus Granulifusus Kuroda & T. Habe, 1954 (37)
- Species Granulifusus amoenus Hadorn & Fraussen, 2005
- Species Granulifusus annae Kantor, Fedosov, M. A. Snyder & Bouchet, 2018
- Species Granulifusus babae Hadorn & Fraussen, 2005
- Species Granulifusus bacciballus Hadorn & Fraussen, 2005
- Species Granulifusus balbus Hadorn & Fraussen, 2005
- Species Granulifusus benjamini Hadorn & Fraussen, 2005
- Species Granulifusus captivus (E. A. Smith, 1889)
- Species Granulifusus consimilis Garrard, 1966
- Species Granulifusus dalli (R. B. Watson, 1882)
- Species Granulifusus discrepans (Kuroda & Habe, 1961)
- Species Granulifusus dondani M. A. Snyder, 2003
- Species Granulifusus dualis (Yokoyama, 1928) †
- Species Granulifusus faurei (Barnard, 1959)
- Species Granulifusus geometricus Hadorn & Fraussen, 2005
- Species Granulifusus guidoi Kantor, Fedosov, M. A. Snyder & Bouchet, 2018
- Species Granulifusus hayashii Habe, 1961
- Species Granulifusus jeanpierrevezzaroi (T. Cossignani, 2017)
- Species Granulifusus kiranus Shuto, 1958
- Species Granulifusus kurodai (Okutani & Sakurai, 1964)
- Species Granulifusus libratus (R. B. Watson, 1886) accepted as Granulifusus dalli (R. B. Watson, 1882)
- Species Granulifusus lochi Hadorn & Fraussen, 2005
- Species Granulifusus martinorum (Cernohorsky, 1987)
- Species Granulifusus monsecourorum Hadorn & Fraussen, 2005
- Species Granulifusus musasiensis (Makiyama, 1922) †
- Species Granulifusus nakasiensis Hadorn & Fraussen, 2005 †
- Species Granulifusus niponicus (E. A. Smith, 1879)
- Species Granulifusus noguchii (T. Habe & Masuda, 1990)
- Species Granulifusus norfolkensis Kantor, Fedosov, M. A. Snyder & Bouchet, 2018
- Species Granulifusus obesus M. A. Snyder, 2013
- Species Granulifusus poppei Delsaerdt, 1995
- Species Granulifusus pulchellus Hadorn & Chino, 2005
- Species Granulifusus rubrolineatus (G. B. Sowerby II, 1870)
- Species Granulifusus rufinodis (E. von Martens, 1901)
- Species Granulifusus simplex (E. A. Smith, 1879) accepted as Fusinus pauciliratus complex M. A. Snyder, 2000
- Species Granulifusus staminatus (Garrard, 1966)
- Species Granulifusus suboblitus (Pilsbry, 1904) accepted as Granulifusus niponicus (E. A. Smith, 1879)
- Species Granulifusus tatianae Kantor, Fedosov, M. A. Snyder & Bouchet, 2018
- Species Granulifusus vermeiji M. A. Snyder, 2003
- Species Granulifusus westhuizeni Lussi, 2014
- Species Granulifusus williami (Poppe & Tagaro, 2006)
- Genus Harasewychia Petuch, 1987 (1)
- Genus Harfordia Dall, 1921 (5)
- Genus Heilprinia Grabau, 1904 (12)
- Genus Helolithus Agassiz, 1846 †
- Genus Hesperaptyxis M. A. Snyder & Vermeij, 2016 (7)
- Genus Iscafusus Kollmann, 2005 † (3)
- Genus Lamarckofusus Vermeij & Lozouet, 2012 † (2)
- Genus Lepidocolus P. A. Maxwell, 1992 † (4)
- Genus Liracolus P. A. Maxwell, 1992 † accepted as Falsicolus (Liracolus) P. A. Maxwell, 1992 †
- Genus Lirofusus Conrad, 1865 †
- Genus Lyonsifusus Vermeij & M. A. Snyder, 2018 (2)
- Genus Mariafusus Petuch, 1988 †
- Genus Marmorofusus M. A. Snyder & W. G. Lyons, 2014 (22)
- Genus Microcolus Cotton & Godfrey, 1932 (7)
- Genus Microfulgur H. J. Finlay & Marwick, 1937 (5)
- Genus Okutanius Kantor, Fedosov, M. A. Snyder & Bouchet, 2018 accepted as Takashius Kantor, Fedosov, M. A. Snyder & Bouchet, 2022
- Genus Ollaphon Iredale, 1929 (3)
- Genus Parvofusus Tabanelli, 2014 † (1)
- Genus Perrilliata Squires & Saul, 2006 † (1)
- Genus Priscofusus Conrad, 1865 † (5)
- Genus Propefusus Iredale, 1924 (7)
- Genus Pseudaptyxis Petuch, 1988 †
- Genus Pseudofusus Monterosato, 1884 (35)
- Genus Pseudolatirus Cossmann, 1889 † accepted as Streptolathyrus Cossmann, 1901 †
- Genus Pullincola De Gregorio, 1894 †
- Genus Remera Stephenson, 1941 † (4)
- Genus Simplicifusus Kuroda & T. Habe, 1971 accepted as Granulifusus Kuroda & T. Habe, 1954
- Genus Sinistralia H. Adams & A. Adams, 1853 (3)
- Genus Smytheria Hadorn, 2024 (3)
- Genus Solutofusus Pritchard, 1898 † (3)
- Genus Streptochetus Cossmann, 1889 † (9)
- Genus Takashius Kantor, Fedosov, M. A. Snyder & Bouchet, 2022 (7)
- Genus Tectifusus Tate, 1894 † (1)
- Genus Trophonofusus Kuroda & Habe, 1971 (1)
- Genus Vermeijius Kantor, Fedosov, M. A. Snyder & Bouchet, 2018 (7)
- Genus Viridifusus M. A. Snyder, Vermeij & W. G. Lyons, 2012 (4)
- Genus Xenofusinus Harzhauser, Landau & Vermeij, 2024 † (1)
- Subfamily Peristerniinae Tryon, 1880 (240)
- Genus Paleosephaea Wade, 1926 † (1)
- Genus Pseudolathyrus [sic] accepted as Pseudolatirus Bellardi, 1884 †
- Genus Rocalaria del Río, 2012 † (1)
- Family Fulguridae Stoliczka, 1867 accepted as Busyconinae Wade, 1917 (1867)
- Family Galeodidae Thiele, 1925 accepted as Melongenidae Gill, 1871 (1854)
- Family Heligmotomidae Adegoke, 1977 † accepted as Melongenidae Gill, 1871 (1854)
- Family Latiridae Iredale, 1929 accepted as Fasciolariinae Gray, 1853
- Family Melongenidae Gill, 1871 (1854) (90)
- Family Nassariidae Iredale, 1916 (1835) (1 083)
- Family Neptuneidae W. Stimpson, 1865 accepted as Neptuneinae W. Stimpson, 1865
- Family Peristerniidae Tryon, 1880 accepted as Peristerniinae Tryon, 1880
- Family Pisaniidae J. E. Gray, 1857 (321)
- Family Prodotiidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021 (27)
- Family Prosiphonidae A. W. B. Powell, 1951 (165)
- Family Pusiostomatidae Iredale, 1940 accepted as Pisaniidae J. E. Gray, 1857
- Family Pyrenidae Suter, 1909 accepted as Atiliinae Cossmann, 1901
- Family Retimohniidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021 (31)
- Family Tudiclidae Cossmann, 1901 (195)
- Family Volemidae Winckworth, 1945 accepted as Melongenidae Gill, 1871 (1854)
- Superfamily Cancellarioidea Forbes & Hanley, 1851 accepted as Volutoidea Rafinesque, 1815
- Superfamily Conoidea J. Fleming, 1822 (8 671)
- Superfamily Mitroidea Swainson, 1831 (633)
- Superfamily Muricacea accepted as Muricoidea Rafinesque, 1815
- Superfamily Muricoidea Rafinesque, 1815 (2 940)
- Superfamily Neogastropoda incertae sedis (296)
- Superfamily Olivoidea Latreille, 1825 (740)
- Superfamily Pholidotomoidea Cossmann, 1896 † (55)
- 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 (1 252)
- Superfamily Volutoidea Rafinesque, 1815 (3 873)
- Order Stenoglossa accepted as Neogastropoda
- Subclass Gastropoda incertae sedis (308)
- Subclass Heterobranchia (39 154)
- 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
