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- Mollusca (132 888)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 022)
- Class Caudofoveata (143)
- Class Cephalopoda (1 838)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 777)
- Subclass Amphigastropoda † (396)
- Subclass Angiogastropoda represented as Gastropoda
- Subclass Apogastropoda
- Subclass Caenogastropoda (53 684)
- Subterclass Sorbeoconcha (147)
- Superorder Hypsogastropoda
- Order Architaenioglossa (4 919)
- Order Caenogastropoda incertae sedis (7 677)
- Order Littorinimorpha (17 189)
- Order Neogastropoda (23 752)
- Superfamily Buccinoidea Rafinesque, 1815 (5 255)
- 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)
- Subfamily Ancistrolepidinae T. Habe & Sato, 1973 accepted as Parancistrolepidinae T. Habe, 1972
- Subfamily Beringiinae A. N. Golikov & Starobogatov, 1975 (32)
- Subfamily Brevisiphoniinae Lus, 1973 accepted as Parancistrolepidinae T. Habe, 1972
- Subfamily Buccinidae incertae sedis (45)
- Subfamily Buccininae Rafinesque, 1815 (167)
- Subfamily Buccinulinae H. J. Finlay, 1928 accepted as Tudiclidae Cossmann, 1901
- Subfamily Chrysodominae Dall, 1870 accepted as Neptuneinae W. Stimpson, 1865
- Subfamily Fusinae Swainson, 1840 accepted as Fusininae Wrigley, 1927
- Subfamily Lachesinae Bellardi, 1877 accepted as Chauvetiidae Kantor, Fedosov, Kosyan, Puillandre, Sorokin, Kano, R. Clark & Bouchet, 2021
- Subfamily Liomesinae P. Fischer, 1884 (3)
- Subfamily Neptuneinae W. Stimpson, 1865 (106)
- Subfamily Parancistrolepidinae T. Habe, 1972 (40)
- Subfamily Pisaniinae J. E. Gray, 1857 accepted as Pisaniidae J. E. Gray, 1857
- Subfamily Siphonaliinae Finlay, 1928 (73)
- Genus Bayerius Olsson, 1971 (9)
- Genus Calliloconcha accepted as Calliloncha Lus, 1978
- Genus Calliloncha Lus, 1978 accepted as Bayerius Olsson, 1971
- Genus Japeuthria Iredale, 1918 (2)
- Genus Mohnia Friele, 1879 (9)
- Genus Paracalliloncha Lus, 1989 accepted as Bayerius Olsson, 1971
- Genus Pararetifusus Kosuge, 1967 (3)
- Genus Phaenomenella Fraussen & Hadorn, 2006 (11)
- Genus Siphonalia A. Adams, 1863 (39)
- Subgenus Siphonalia (Coptochetus) Cossmann, 1889 † accepted as Coptochetus Cossmann, 1889 †
- Subgenus Siphonalia (Kelletia) P. Fischer, 1884 accepted as Kelletia P. Fischer, 1884
- Subgenus Siphonalia (Lyrofusus) De Gregorio, 1880 † accepted as Lyrofusus De Gregorio, 1880 †
- Subgenus Siphonalia (Penion) P. Fischer, 1884 accepted as Penion P. Fischer, 1884
- Subgenus Siphonalia (Phoracanthus) K. Martin, 1914 † accepted as Phoracanthus K. Martin, 1914 †
- Subgenus Siphonalia (Pseudoneptunea) Kobelt, 1882 accepted as Pseudoneptunea Kobelt, 1882
- Subgenus Siphonalia (Siphonalia) A. Adams, 1863 represented as Siphonalia A. Adams, 1863
- Species Siphonalia acuminata A. Adams, 1863 accepted as Nassaria acutispirata (G. B. Sowerby III, 1913)
- Species Siphonalia arctata Staadt, 1913 †
- Species Siphonalia arenaria Cossmann, 1889 † accepted as Suessionia arenaria (Cossmann, 1889) †
- Species Siphonalia ariejansseni Schnetler, 2001 †
- Species Siphonalia aspersa Kuroda & T. Habe, 1961
- Species Siphonalia bantamensis K. Martin, 1895 †
- Species Siphonalia bervillei (Deshayes, 1864) †
- Species Siphonalia borshengjungi K.-Y. Lai, 2019
- Species Siphonalia callizona Kuroda & T. Habe, 1961
- Species Siphonalia cassidariaeforme [sic] accepted as Siphonalia cassidariaeformis (Reeve, 1846)
- Species Siphonalia cassidariaeformis (Reeve, 1846)
- Species Siphonalia chaussyensis Cossmann, 1889 † accepted as Siphonaliopsis chaussyensis (Cossmann, 1889) †
- Species Siphonalia cingulata (F. W. Hutton, 1885) † accepted as Cominella cingulata (F. W. Hutton, 1885) †
- Species Siphonalia clarkei Tenison Woods, 1876 accepted as Tasmeuthria clarkei (Tenison Woods, 1876)
- Species Siphonalia colus A. Adams, 1863 accepted as Siphonalia modificata (Reeve, 1846)
- Species Siphonalia commoda A. Adams, 1863
- Species Siphonalia compacta Suter, 1917 † accepted as Nassicola compacta (Suter, 1917) †
- Species Siphonalia concinna A. Adams, 1863
- Species Siphonalia conspersa A. Adams, 1863
- Species Siphonalia corrugata A. Adams, 1863 accepted as Siphonalia cassidariaeformis (Reeve, 1846)
- Species Siphonalia dainitiensis Makiyama, 1927 †
- Species Siphonalia declivis Yokoyama, 1926 †
- Species Siphonalia dentifera K. Martin, 1895 †
- Species Siphonalia dilatata (Quoy & Gaimard, 1833) accepted as Penion sulcatus (Lamarck, 1816)
- Species Siphonalia dubia Packard, 1922 † accepted as Saturnus dubius (Packard, 1922) †
- Species Siphonalia elegans Suter, 1917 † accepted as Aeneator elegans (Suter, 1917)
- Species Siphonalia excelsa Suter, 1917 † accepted as Glaphyrina excelsa (Suter, 1917) †
- Species Siphonalia filosa A. Adams, 1863 accepted as Siphonalia spadicea (Reeve, 1847)
- Species Siphonalia flexuosa P. Marshall, 1918 † accepted as Austrofusus flexuosus (P. Marshall, 1918) †
- Species Siphonalia fortini Chédeville, 1904 † accepted as Pseudoneptunea fortini (Chédeville, 1904) †
- Species Siphonalia fuscolineata (Pease, 1860) accepted as Siphonalia spadicea (Reeve, 1847)
- Species Siphonalia fusoides (Reeve, 1846)
- Species Siphonalia grisea A. Adams, 1863 accepted as Siphonalia cassidariaeformis (Reeve, 1846)
- Species Siphonalia heptoides Cossmann, 1903 †
- Species Siphonalia hinnulus (A. Adams & Reeve, 1850)
- Species Siphonalia hirasei Kuroda & T. Habe, 1961
- Species Siphonalia hyperodon Pilsbry, 1895 accepted as Siphonalia mikado Melvill, 1888
- Species Siphonalia kalpanae Banerjee & Halder, 2024 †
- Species Siphonalia kawaensis Bartrum, 1919 † accepted as Zelandiella propenodosa (Bartrum, 1919) †
- Species Siphonalia kelletti [sic] accepted as Kelletia kelletii (Forbes, 1852)
- Species Siphonalia kellettioides Yokoyama, 1928 † accepted as Hemifusus kellettioides (Yokoyama, 1928) †
- Species Siphonalia kempi Maury, 1910 † accepted as Aurantilaria kempi (Maury, 1910) †
- Species Siphonalia kikaigashimana Y. Hirase, 1908
- Species Siphonalia krimica Gorbach, 1972 †
- Species Siphonalia kuronoi T. C. Lan & Goto, 2004
- Species Siphonalia laddi MacNeil, 1961 accepted as Manaria kuroharai Azuma, 1960
- Species Siphonalia lamellifera Tate, 1888 † accepted as Penion lamellifera (Tate, 1888) †
- Species Siphonalia leei S.-Q. Zhang & S.-P. Zhang, 2018
- Species Siphonalia ligata A. Adams, 1863
- Species Siphonalia longirostris Dunker, 1882 accepted as Siphonalia fusoides (Reeve, 1846)
- Species Siphonalia longirostris Tate, 1888 † accepted as Penion longirostris (Tate, 1888) †
- Species Siphonalia lubrica Dall, 1918 accepted as Siphonofusus lubricus (Dall, 1918)
- Species Siphonalia martini Wanner & Hahn, 1935 † accepted as Buccinulum martini (Wanner & Hahn, 1935) †
- Species Siphonalia marybethi Parth, 1996
- Species Siphonalia maxima Tryon, 1881 accepted as Penion maximus (Tryon, 1881)
- Species Siphonalia mikado Melvill, 1888
- Species Siphonalia minor S.-Q. Zhang, S.-P. Zhang & C.-Y. Lee, 2021
- Species Siphonalia modificata (Reeve, 1846)
- Species Siphonalia modificatum [sic] accepted as Siphonalia modificata (Reeve, 1846)
- Species Siphonalia morteni Schnetler & M. S. Nielsen, 2018 †
- Species Siphonalia munda A. Adams, 1863
- Species Siphonalia nanshaensis S.-Q. Zhang & S.-P. Zhang, 2018
- Species Siphonalia nigrobrunnea C.-Y. Lee & C.-L. Chen, 2010
- Species Siphonalia nodosa (Martyn, 1784) accepted as Austrofusus glans (Röding, 1798)
- Species Siphonalia nodulosa A. Adams, 1863
- Species Siphonalia oligostira Tate, 1891 accepted as Penion mandarinus (Duclos, 1832)
- Species Siphonalia orbita F. W. Hutton, 1885 † accepted as Aeneator orbitus (F. W. Hutton, 1885) †
- Species Siphonalia ornata A. Adams, 1863 accepted as Siphonalia cassidariaeformis (Reeve, 1846)
- Species Siphonalia pallida (Broderip & G. B. Sowerby I, 1829) accepted as Solenosteira pallida (Broderip & G. B. Sowerby I, 1829)
- Species Siphonalia pfefferi G. B. Sowerby III, 1900
- Species Siphonalia pfeifferi [sic] accepted as Siphonalia pfefferi G. B. Sowerby III, 1900
- Species Siphonalia phosoidea G. D. Hanna & Israelsky, 1925 †
- Species Siphonalia pritilatae Banerjee & Halder, 2024 †
- Species Siphonalia propenodosa Bartrum, 1919 † accepted as Zelandiella propenodosa (Bartrum, 1919) †
- Species Siphonalia pseudobuccinum Melvill, 1888 accepted as Siphonalia modificata (Reeve, 1846)
- Species Siphonalia pyramis A. Adams, 1863
- Species Siphonalia riparia Lozouet, 1999 † accepted as Oligonalia riparia (Lozouet, 1999) †
- Species Siphonalia semiplicata Pilsbry, 1896 accepted as Siphonalia fusoides (Reeve, 1846)
- Species Siphonalia senilis P. Marshall & Murdoch, 1920 † accepted as Marshallaria senilis (P. Marshall & Murdoch, 1920) †
- Species Siphonalia signa (Reeve, 1846) accepted as Siphonalia signum (Reeve, 1846)
- Species Siphonalia signum (Reeve, 1846)
- Species Siphonalia soyomaruae Okutani, 1972
- Species Siphonalia spadicea (Reeve, 1847)
- Species Siphonalia spatiosa Tate, 1888 † accepted as Penion spatiosus (Tate, 1888) †
- Species Siphonalia spiracuta P. J. Fischer, 1921 †
- Species Siphonalia stearnsii Pilsbry, 1894 accepted as Siphonalia modificata (Reeve, 1846)
- Species Siphonalia subdilatata Yen, 1936 accepted as Neptunea subdilatata (Yen, 1936)
- Species Siphonalia subspadicea MacNeil, 1961 †
- Species Siphonalia tatei G. F. Harris, 1897 † accepted as Sipho asperulus Tate, 1888 †
- Species Siphonalia teres S.-Q. Zhang, S.-P. Zhang & C.-Y. Lee, 2021
- Species Siphonalia tjibaliungensis K. Martin, 1895 †
- Species Siphonalia trochula (Reeve, 1846) accepted as Siphonalia trochulus (Reeve, 1846)
- Subspecies Siphonalia trochula tokaiensis Kira, 1959 accepted as Siphonalia trochulus tokaiensis Kira, 1959
- Subspecies Siphonalia trochula trochula (Reeve, 1846) accepted as Siphonalia trochulus trochulus (Reeve, 1846)
- Species Siphonalia trochulus (Reeve, 1846)
- Species Siphonalia turrita Tenison Woods, 1876 accepted as Tasmeuthria clarkei (Tenison Woods, 1876)
- Species Siphonalia turrita Suter, 1914 † accepted as Austrofusus pagoda (H. J. Finlay, 1924) †
- Species Siphonalia vanattai Pilsbry, 1905
- Species Siphonalia yonabaruensis MacNeil, 1961 †
- Genus Tacita Lus, 1971 accepted as Bayerius Olsson, 1971
- Subfamily Truncariinae Cossmann, 1901 (4)
- Subfamily Volutopsiinae Habe & Sato, 1973 (31)
- Genus Accidenticulabrum Vermeij, 2000 † (2)
- Genus Boreofusus G. O. Sars, 1878 accepted as Troschelia Mörch, 1876
- Genus Buccinofusus Conrad, 1866 † (3)
- Genus Costulofusus De Gregorio, 1894 † accepted as Lyrofusus De Gregorio, 1880 †
- Genus Denticulabrum Vermeij, 1999 † accepted as Accidenticulabrum Vermeij, 2000 †
- Genus Ectracheliza Gabb, 1873 † accepted as Hemisinus Swainson, 1840
- Genus Eripachya Gabb, 1869 † (2)
- Genus Harpofusus Habe & Ki. Ito, 1965 accepted as Pyrulofusus Mörch, 1869
- Genus Hilda R. Hoernes & Auinger, 1884 † (1)
- Genus Jania Bellardi, 1873 † accepted as Janiopsis Rovereto, 1899 †
- Genus Josepha [sic] accepted as Iosepha Tenison Woods, 1879
- Genus Laevibuccinum Conrad, 1865 † (1)
- Genus Neosconsia Olsson, 1964 † (1)
- Genus Neptunaea [sic] accepted as Neptunea Röding, 1798
- Genus Parasipho Dautzenberg & H. Fischer, 1912 accepted as Plicifusus Dall, 1902
- Genus Phoracanthus K. Martin, 1914 † (1)
- 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)
- 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) (92)
- 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 (8 696)
- Superfamily Mitroidea Swainson, 1831 (633)
- Superfamily Muricacea accepted as Muricoidea Rafinesque, 1815
- Superfamily Muricoidea Rafinesque, 1815 (2 941)
- Superfamily Neogastropoda incertae sedis (296)
- Superfamily Olivoidea Latreille, 1825 (740)
- Superfamily Pholidotomoidea Cossmann, 1896 † (56)
- 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 (1 253)
- Superfamily Volutoidea Rafinesque, 1815 (3 882)
- Order Stenoglossa accepted as Neogastropoda
- Subclass Gastropoda incertae sedis (309)
- Subclass Heterobranchia (39 180)
- 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 (6 783)
- 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