Between brackets is the number of accepted species

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- Mollusca (133 313)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 086)
- Subclass Autobranchia (23 358)
- Infraclass Heteroconchia (16 682)
- Subterclass Archiheterodonta (1 214)
- Subterclass Euheterodonta (11 393)
- Superorder Anomalodesmata (990)
- Superorder Imparidentia (10 370)
- Order Adapedonta (263)
- Order Cardiida (3 057)
- Superfamily Anthracosioidea Amalitzky, 1892 † (215)
- Superfamily Cardiacea accepted as Cardioidea Lamarck, 1809
- Superfamily Cardioidea Lamarck, 1809 (1 536)
- Superfamily Tellinacea accepted as Tellinoidea Blainville, 1814
- Superfamily Tellinoidea Blainville, 1814 (1 306)
- Family Amphidesmatidae Latreille, 1825 accepted as Semelidae Stoliczka, 1870 (1825)
- Family Asaphidae Winckworth, 1932 accepted as Psammobiidae J. Fleming, 1828
- Family Donacidae J. Fleming, 1828 (144)
- Family Garidae Stoliczka, 1870 accepted as Psammobiidae J. Fleming, 1828
- Family Icanotiidae R. Casey, 1961 † (7)
- Family Lavignonidae Récluz, 1869 accepted as Semelidae Stoliczka, 1870 (1825)
- Family Psammobiidae J. Fleming, 1828 (147)
- Genus Asaphinella Cossmann, 1886 † (4)
- Genus Asaphis Modeer, 1793 (2)
- Genus Azor J. De C. Sowerby, 1824 accepted as Psammotaea Lamarck, 1818
- Genus Capsa Bruguière, 1797 accepted as Asaphis Modeer, 1793
- Genus Capsula Schumacher, 1817 accepted as Asaphis Modeer, 1793
- Genus Corbula Röding, 1798 accepted as Asaphis Modeer, 1793
- Genus Dysmea Dall, Bartsch & Rehder, 1938 accepted as Gari (Dysmea) Dall, Bartsch & Rehder, 1938
- Genus Flavomala Cotton, 1961 accepted as Hiatula Modeer, 1793
- Genus Florisarka Iredale, 1936 accepted as Hiatula Modeer, 1793
- Genus Gari Schumacher, 1817 (90)
- Genus Garum Dall, 1900 † accepted as Gari Schumacher, 1817
- Genus Gobraeus T. Brown, 1844 accepted as Gari (Gobraeus) T. Brown, 1844
- Genus Grammatomya Dall, 1898 accepted as Gari Schumacher, 1817
- Genus Hainania Scarlato, 1965 accepted as Nuttallia Dall, 1898
- Genus Heterodonax Mörch, 1853 (4)
- Genus Heteroglypta E. von Martens, 1880 (1)
- Genus Hiatula Modeer, 1793 (24)
- Genus Isarcha Gistel, 1848 accepted as Sanguinolaria Lamarck, 1799
- Genus Kermadysmea A. W. B. Powell, 1958 accepted as Gari (Kermadysmea) A. W. B. Powell, 1958
- Genus Lobaria Schumacher, 1817 accepted as Sanguinolaria Lamarck, 1799
- Genus Macropsammus Cossmann, 1902 accepted as Gari Schumacher, 1817
- Genus Milligaretta Iredale, 1936 accepted as Gari Schumacher, 1817
- Genus Nanhaia S. Morris & N. Morris, 1983 accepted as Nuttallia Dall, 1898
- Genus Nuttallia Dall, 1898 (11)
- Genus Plebidonax Iredale, 1930 (2)
- Genus Psammobia Lamarck, 1818 accepted as Gari Schumacher, 1817
- Genus Psammocola Blainville, 1824 accepted as Asaphis Modeer, 1793
- Genus Psammodonax Cossmann, 1886 accepted as Gari (Psammodonax) Cossmann, 1886
- Genus Psammosphaerica Jousseaume, 1894 Auct. accepted as Psammosphaerita Jousseaume, 1894
- Genus Psammosphaerita Jousseaume, 1894 (1)
- Genus Psammosphoerica Jousseaume, 1894 accepted as Psammosphaerita Jousseaume, 1894
- Genus Psammotaea Lamarck, 1818 accepted as Moerella P. Fischer, 1887
- Genus Psammotea accepted as Gari Schumacher, 1817
- Genus Psammotella Herrmannsen, 1852 (2)
- Genus Psammotella H. Adams & A. Adams, 1856 accepted as Hiatula Modeer, 1793
- Genus Psammotellina Fischer, 1887 accepted as Sanguinolaria Lamarck, 1799
- Genus Psammotoea Lamarck, 1818 accepted as Psammotaea Lamarck, 1818
- Genus Sanguinolaria Lamarck, 1799 (6)
- Subgenus Sanguinolaria (Hainania) Scarlato, 1965 accepted as Nuttallia Dall, 1898
- Species Sanguinolaria (Hainania) tchangsii Scarlato, 1965 accepted as Nuttallia tchangsii (Scarlato, 1965)
- Subgenus Sanguinolaria (Nuttallia) Dall, 1898 accepted as Nuttallia Dall, 1898
- Subgenus Sanguinolaria (Psammotella) Herrmannsen, 1852 accepted as Psammotella Herrmannsen, 1852
- Subgenus Sanguinolaria (Psammotoea) Lamarck, 1818 † accepted as Psammotaea Lamarck, 1818
- Subgenus Sanguinolaria (Sanguinolaria) Lamarck, 1799 accepted as Sanguinolaria Lamarck, 1799
- Subgenus Sanguinolaria (Soletellina) Blainville, 1824 accepted as Soletellina Blainville, 1824
- Species Sanguinolaria achatina (Spengler, 1798)
- Species Sanguinolaria acuminata (Reeve, 1857) accepted as Hiatula diphos (Linnaeus, 1771)
- Species Sanguinolaria acuta Y.-Y. Cai & Q.-Q. Zhuang, 1985 accepted as Hiatula acuta (Y.-Y. Cai & Q.-Q. Zhuang, 1985)
- Species Sanguinolaria africana Cosel, 1990 accepted as Sanguinolaria achatina (Spengler, 1798)
- Species Sanguinolaria alpina Münster, 1841 †
- Species Sanguinolaria angustatus J. Phillips, 1836 † accepted as Sanguinolites angustatus (J. Phillips, 1836) †
- Species Sanguinolaria antarctica Mabille & Rochebrune, 1889 accepted as Macoploma inornata (Hanley, 1844)
- Species Sanguinolaria arcuata J. Phillips, 1836 †
- Species Sanguinolaria atrata (Reeve, 1857) accepted as Hiatula atrata (Reeve, 1857)
- Species Sanguinolaria attenuata Portlock, 1843 †
- Species Sanguinolaria aureocincta E. von Martens, 1879 accepted as Sanguinolaria vitrea Deshayes, 1855
- Species Sanguinolaria bertini Pilsbry & H. N. Lowe, 1932 accepted as Psammotella bertini (Pilsbry & H. N. Lowe, 1932)
- Species Sanguinolaria californiana Conrad, 1837 accepted as Limecola petalum (Valenciennes, 1821)
- Species Sanguinolaria capensis (G. B. Sowerby III, 1889) accepted as Hiatula capensis (G. B. Sowerby III, 1889)
- Species Sanguinolaria carinata Goldfuss, 1841 †
- Species Sanguinolaria castanea Scarlato, 1965 accepted as Gari chinensis (Deshayes, 1855)
- Species Sanguinolaria clouei (Bertin, 1880) accepted as Hiatula clouei Bertin, 1880
- Species Sanguinolaria compressa J. De C. Sowerby, 1824 †
- Species Sanguinolaria compressa Goldfuss, 1841 †
- Species Sanguinolaria cretacensis Conrad, 1860 †
- Species Sanguinolaria cruenta ([Lightfoot], 1786) accepted as Psammotella cruenta ([Lightfoot], 1786)
- Species Sanguinolaria dichotoma Anton, 1838 accepted as Asaphis violascens (Forsskål, 1775)
- Species Sanguinolaria diphos (Linnaeus, 1771) accepted as Hiatula diphos (Linnaeus, 1771)
- Species Sanguinolaria dorsata Goldfuss, 1841 † accepted as Nyassa dorsata (Goldfuss, 1841) †
- Species Sanguinolaria edwardsi J. Morris, 1852 † accepted as Gari edwardsi (J. Morris, 1852) †
- Species Sanguinolaria elliptica J. Phillips, 1841 †
- Species Sanguinolaria elongata (Lamarck, 1818) accepted as Gari elongata (Lamarck, 1818)
- Species Sanguinolaria gibbosa J. De C. Sowerby, 1827 † accepted as Gilbertsonia gibbosa (J. De C. Sowerby, 1827) †
- Species Sanguinolaria gracilis Münster, 1841 †
- Species Sanguinolaria grandis P. P. Carpenter, 1857 accepted as Nuttallia nuttallii (Conrad, 1837)
- Species Sanguinolaria hendersoni Melvill & Standen, 1898 accepted as Salmacoma nobilis (Hanley, 1845)
- Species Sanguinolaria hollowaysii J. Sowerby, 1817 †
- Species Sanguinolaria iridescens W. H. Benson, 1842 accepted as Iridona iridescens (W. H. Benson, 1842)
- Species Sanguinolaria laevigata Goldfuss, 1841 †
- Species Sanguinolaria lamarckii Deshayes, 1824 † accepted as Homalina lamarckii (Deshayes, 1824) †
- Species Sanguinolaria lamellosa Goldfuss, 1841 †
- Species Sanguinolaria lata Münster, 1841 †
- Species Sanguinolaria lirata J. Phillips, 1841 † accepted as Palaeoneilo lirata (J. Phillips, 1841) †
- Species Sanguinolaria livida Lamarck, 1818 accepted as Hiatula biradiata (W. Wood, 1815)
- Species Sanguinolaria lunulata (Deshayes, 1855) accepted as Hiatula lunulata (Deshayes, 1855)
- Species Sanguinolaria maxima Portlock, 1843 †
- Species Sanguinolaria neptuni Münster, 1841 †
- Species Sanguinolaria nivea Mörch, 1853 accepted as Sanguinolaria sanguinolenta (Gmelin, 1791)
- Species Sanguinolaria nuttallii Conrad, 1837 accepted as Nuttallia nuttallii (Conrad, 1837)
- Species Sanguinolaria oblonga Portlock, 1843 †
- Species Sanguinolaria okeni Münster, 1841 †
- Species Sanguinolaria olivacea (J. C. Jay, 1857) accepted as Nuttallia obscurata (Reeve, 1857)
- Species Sanguinolaria orcutti Dall, 1921 accepted as Nuttallia nuttallii (Conrad, 1837)
- Species Sanguinolaria ovalis Reeve, 1857
- Species Sanguinolaria phaseolina Goldfuss, 1841 †
- Species Sanguinolaria plicata Portlock, 1843 † accepted as Siliquimya plicata (Portlock, 1843) †
- Species Sanguinolaria purpurea Deshayes, 1855 accepted as Sanguinolaria tellinoides A. Adams, 1850
- Species Sanguinolaria pusilla Münster, 1841 †
- Species Sanguinolaria pygmaea Münster, 1841 †
- Species Sanguinolaria robertsii Tryon, 1870 accepted as Hiatula ambigua (Reeve, 1857)
- Species Sanguinolaria rosea Lamarck, 1801 accepted as Sanguinolaria sanguinolenta (Gmelin, 1791)
- Species Sanguinolaria sanguinolenta (Gmelin, 1791)
- Species Sanguinolaria soleniformis Goldfuss, 1841 †
- Species Sanguinolaria striata Münster, 1841 †
- Species Sanguinolaria sulcata J. Phillips, 1836 † accepted as Allorisma sulcata (J. Phillips, 1836) †
- Species Sanguinolaria tahitensis Bernardi, 1852 accepted as Asaphis violascens (Forsskål, 1775)
- Species Sanguinolaria tchangsii Scarlato, 1965 accepted as Nuttallia tchangsii (Scarlato, 1965)
- Species Sanguinolaria tellinaria Goldfuss, 1841 †
- Species Sanguinolaria tellinoides A. Adams, 1850
- Species Sanguinolaria tenuis Olsson, 1961
- Species Sanguinolaria togata (Deshayes, 1855) accepted as Gari togata (Deshayes, 1855)
- Species Sanguinolaria transversa Portlock, 1843 † accepted as Siliquimya plicata (Portlock, 1843) †
- Species Sanguinolaria truncata Goldfuss, 1841 †
- Species Sanguinolaria tumida J. Phillips, 1836 †
- Species Sanguinolaria undata Portlock, 1843 †
- Species Sanguinolaria undulata J. De C. Sowerby, 1827 †
- Species Sanguinolaria unioides Guppy, 1896 †
- Species Sanguinolaria uwadokoi Otuka, 1943 † accepted as Nuttallia uwadokoi (Otuka, 1943) †
- Species Sanguinolaria ventricosa R. A. Philippi, 1851 accepted as Asaphis violascens (Forsskål, 1775)
- Species Sanguinolaria vespertina Pilsbry & H. N. Lowe, 1932 accepted as Sanguinolaria ovalis Reeve, 1857
- Species Sanguinolaria vitrea Deshayes, 1855
- Species Sanguinolaria vitrea Deshayes, 1855 sensu Nicklès, 1952 accepted as Sanguinolaria achatina (Spengler, 1798)
- Genus Solenotellina P. Fischer, 1887 accepted as Hiatula Modeer, 1793
- Genus Soletellina Blainville, 1824 accepted as Hiatula Modeer, 1793
- Family Quenstedtiidae L. R. Cox, 1929 † (3)
- Family Sanguinolariidae M. Smith, 1937 accepted as Psammobiidae J. Fleming, 1828
- Family Scrobiculariidae H. Adams & A. Adams, 1856 accepted as Semelidae Stoliczka, 1870 (1825) (2)
- Family Semelidae Stoliczka, 1870 (1825) (207)
- Family Solecurtidae A. d'Orbigny, 1846 (54)
- Family Sowerbyidae L. R. Cox, 1929 † (1)
- Family Tancrediidae Meek, 1864 † (4)
- Family Tellinidae Blainville, 1814 (737)
- Family Unicardiopsidae Chavan, 1969 †
- Subfamily Scrobiculariinae H. Adams & A. Adams, 1856 accepted as Semelidae Stoliczka, 1870 (1825)
- Superfamily Tridacnoidea accepted as Tridacninae Lamarck, 1819
- Order Galeommatida (791)
- Order Gastrochaenida (43)
- Order Hiatellida represented as Adapedonta
- Order Hippuritida † (322)
- Order Lucinida (997)
- Order Megalodontida † (141)
- Order Modiomorphida † (95)
- Order Myacea accepted as Myida
- Order Myida (925)
- Order Sphaeriida (661)
- Order Venerida (2 829)
- Superfamily Cyamioidea G. O. Sars, 1878 (98)
- Superfamily Gaimardioidea Hedley, 1916 accepted as Cyamioidea G. O. Sars, 1878
- Superfamily Galeommatacea accepted as Galeommatoidea J. E. Gray, 1840
- Superfamily Grammysioidea S. A. Miller, 1877 † (102)
- Superfamily Kalenteroidea Marwick, 1953 † (46)
- Superfamily Mactracea accepted as Mactroidea Lamarck, 1809
- Order Anomalodesmacea accepted as Anomalodesmata
- Order Euheterodonta incertae sedis (27)
- Order Pholadomyida represented as Anomalodesmata
- Family Lipanellidae T. M. Sánchez, 2005 † (4)
- Family Rhaetidiidae Dominici & Danise, 2024 † (2)
- Subterclass Heterodonta
- Subterclass Palaeoheterodonta (4 074)
- Superorder Heteroconchia incertae sedis † (1)
- Infraclass Pteriomorphia (6 676)
- Subclass Bivalvia incertae sedis (7)
- Subclass Palaeotaxodonta accepted as Nuculida
- Subclass Paleoheterodonta accepted as Palaeoheterodonta
- Subclass Protobranchia (1 379)
- Infraclass Cryptodonta † (342)
- Class Caudofoveata (143)
- Class Cephalopoda (1 921)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (103 049)
- 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 (754)
- Class Solenoconchia accepted as Scaphopoda
- Class Solenogastres (313)
- Subclass Chaetodermomorpha accepted as Caudofoveata