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- Mollusca (132 851)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Amphineura accepted as Aculifera
- Class Bivalvia (25 013)
- Subclass Autobranchia (23 299)
- Infraclass Heteroconchia (16 639)
- Infraclass Pteriomorphia (6 660)
- Superorder Eupteriomorphia
- Order Arcida (1 227)
- Superfamily Arcacea accepted as Arcoidea Lamarck, 1809
- Superfamily Arcida incertae sedis (1)
- Superfamily Arcoidea Lamarck, 1809 (914)
- Family Arcidae Lamarck, 1809 (505)
- Family Catamarcaiidae Cope, 2000 † (1)
- Family Cucullaeidae R. B. Stewart, 1930 (46)
- Family Frejidae Ratter & Cope, 1998 † (2)
- Family Glycymeridae [sic] accepted as Glycymerididae Dall, 1908 (1847)
- Family Glycymerididae Dall, 1908 (1847) (221)
- Subfamily Axinaeinae H. Adams & A. Adams, 1858 accepted as Glycymerididae Dall, 1908 (1847)
- Subfamily Melaxinaeinae T. Habe, 1977 accepted as Glycymerididae Dall, 1908 (1847)
- Genus Axinactis Mörch, 1861 (2)
- Genus Axinaea Poli, 1791 accepted as Glycymeris da Costa, 1778
- Genus Axinaeoderma Poli, 1795 accepted as Glycymeris da Costa, 1778
- Genus Axinea [sic] accepted as Axinaea Poli, 1791
- Genus Bellaxinaea Nicol & D. S. Jones, 1984 accepted as Tucetona Iredale, 1939
- Genus Glycimeris [sic] accepted as Glycymeris da Costa, 1778
- Genus Glycymerella Woodring, 1925 accepted as Glycymeris da Costa, 1778
- Genus Glycymeris da Costa, 1778 (126)
- Subgenus Glycymeris (Axinola) Hertlein & U. S. Grant, 1972 accepted as Glycymeris da Costa, 1778
- Subgenus Glycymeris (Chevronia) Moerdijk & van Nieulande, 2000 † represented as Glycymeris da Costa, 1778
- Subgenus Glycymeris (Glycymeris) E. M. da Costa, 1778 represented as Glycymeris da Costa, 1778
- Subgenus Glycymeris (Glycymerita) H. J. Finlay & Marwick, 1937 † accepted as Glycymerita H. J. Finlay & Marwick, 1937 †
- Subgenus Glycymeris (Glycymerula) H. J. Finlay & Marwick, 1937 represented as Glycymeris da Costa, 1778
- Subgenus Glycymeris (Grandaxinea) Iredale, 1931 accepted as Tucetona Iredale, 1939
- Subgenus Glycymeris (Manaia) H. J. Finlay & Marwick, 1937 † represented as Glycymerita H. J. Finlay & Marwick, 1937 †
- Subgenus Glycymeris (Pectunculus) Lamarck, 1799 accepted as Tucetona Iredale, 1939
- Subgenus Glycymeris (Tucetilla) Iredale, 1939 represented as Glycymeris da Costa, 1778
- Subgenus Glycymeris (Tucetona) Iredale, 1939 accepted as Tucetona Iredale, 1939
- Subgenus Glycymeris (Tucetonella) T. Habe, 1961 represented as Glycymeris da Costa, 1778
- Subgenus Glycymeris (Veletuceta) Iredale, 1931 accepted as Glycymeris da Costa, 1778
- Species Glycymeris abessensis Maestrati & Lozouet, 1996 †
- Species Glycymeris acuticostata (G. B. Sowerby I, 1850) †
- Species Glycymeris adenenesis [sic] accepted as Glycymeris adenensis (Jousseaume, 1916)
- Species Glycymeris adenensis (Jousseaume, 1916)
- Species Glycymeris aequilatera (Gmelin, 1791) accepted as Glycymeris undata (Linnaeus, 1758)
- Species Glycymeris africana L. R. Cox, 1939 †
- Species Glycymeris albolineata (Lischke, 1872)
- Species Glycymeris amamiensis Kuroda, 1930 accepted as Glycymeris tenuicostata (Reeve, 1843)
- Species Glycymeris amboinensis (Gmelin, 1791) accepted as Tucetona pectunculus (Linnaeus, 1758)
- Species Glycymeris americana (DeFrance, 1826)
- Species Glycymeris angsanana (K. Martin, 1922) †
- Species Glycymeris angusta Nyst & Westendorp, 1839 † accepted as Cyrtodaria angusta (Nyst & Westendorp, 1839) †
- Species Glycymeris angustidens (Watelet, 1851) †
- Species Glycymeris apinensis J. E. Gray, 1833 accepted as Glauconome chinensis J. E. Gray, 1828
- Species Glycymeris apletos Dailey & Popenoe, 1966 †
- Species Glycymeris approximans (Gabb, 1873) †
- Species Glycymeris arabica (H. Adams, 1871)
- Species Glycymeris araucanus (R. A. Philippi, 1887) †
- Species Glycymeris arcodentiens (Dall, 1895) accepted as Tucetona arcodentiens (Dall, 1895)
- Species Glycymeris argentea da Costa, 1777 accepted as Nucula nucleus (Linnaeus, 1758)
- Species Glycymeris aspersa (A. Adams & Reeve, 1850)
- Species Glycymeris aucklandica A. W. B. Powell, 1938 † accepted as Tucetona aucklandica (A. W. B. Powell, 1938) †
- Species Glycymeris bezanconi (Cossmann, 1892) †
- Species Glycymeris bimaculata (Poli, 1795)
- Species Glycymeris boucheti Matsukuma, 1984
- Species Glycymeris broadfooti Iredale, 1929 accepted as Tucetona broadfooti (Iredale, 1929)
- Species Glycymeris cainozoica (Tenison Woods, 1877) †
- Species Glycymeris callaghani Marwick, 1923 †
- Species Glycymeris camaronesia Ihering, 1907 † accepted as Glycymerita camaronesia (Ihering, 1907) †
- Species Glycymeris canalis A. P. Brown & Pilsbry, 1911 †
- Species Glycymeris canoa Pilsbry & Olsson, 1941 accepted as Tucetona canoa (Pilsbry & Olsson, 1941)
- Species Glycymeris capricornea Hedley, 1906 accepted as Glycymeris tenuicostata (Reeve, 1843)
- Species Glycymeris caputaviscensis Beets, 1987 †
- Species Glycymeris cardiiformis (Angas, 1879) accepted as Tucetona multicostata (G. B. Sowerby I, 1833)
- Species Glycymeris castaneus (Lamarck, 1819) accepted as Glycymeris undata (Linnaeus, 1758)
- Species Glycymeris chambersi P. Marshall & Browne, 1909 † accepted as Tucetona chambersi (P. Marshall & Browne, 1909) †
- Species Glycymeris chehalisensis C. E. Weaver, 1916 †
- Species Glycymeris chemnitzii Dall, 1909 accepted as Tucetona strigilata (G. B. Sowerby I, 1833)
- Species Glycymeris cisshuensis (Makiyama, 1926) †
- Species Glycymeris coalingensis Arnold, 1910 accepted as Glycymeris septentrionalis (Middendorff, 1849)
- Species Glycymeris colchaguensis (Hupé, 1854) †
- Species Glycymeris colorata Eichwald, 1829 accepted as Monodacna colorata (Eichwald, 1829)
- Species Glycymeris concava P. Marshall, 1917 † accepted as Glycymerita concava (P. Marshall, 1917) †
- Species Glycymeris concentrica (Dunker, 1853)
- Species Glycymeris connollyi Tomlin, 1926
- Species Glycymeris conradi Dall, 1909 accepted as Glycymeris septentrionalis (Middendorff, 1849)
- Species Glycymeris cor (Lamarck, 1818) † accepted as Glycymeris nummaria (Linnaeus, 1758)
- Species Glycymeris corteziana Dall, 1916 accepted as Glycymeris septentrionalis (Middendorff, 1849)
- Species Glycymeris cotinga (Iredale, 1939)
- Species Glycymeris crescentensis C. E. Weaver & K. van W. Palmer, 1922 †
- Species Glycymeris dampierensis Matsukuma, 1984
- Species Glycymeris dautzenbergi Prashad, 1932 accepted as Tucetona prashadi (Nicol, 1951)
- Species Glycymeris decurrens Chapman & Singleton, 1925 † accepted as Tucetona decurrens (Chapman & Singleton, 1925) †
- Species Glycymeris decussata (Linnaeus, 1758)
- Species Glycymeris depressa (Deshayes, 1829) †
- Species Glycymeris derelectus (Yokoyama, 1928) †
- Species Glycymeris deshayesi (Mayer, 1868) †
- Species Glycymeris diaphorus Dall, 1916 accepted as Glycymeris longior (G. B. Sowerby I, 1833)
- Species Glycymeris diomedea Dall, Bartsch & Rehder, 1938 accepted as Tucetona diomedea (Dall, Bartsch & Rehder, 1938)
- Species Glycymeris dispar (Defrance, 1826) †
- Species Glycymeris dissimilis (Deshayes, 1858) †
- Species Glycymeris dolini Maestrati & Lozouet, 1996 †
- Species Glycymeris dunkeri (O. Boettger, 1883) †
- Species Glycymeris duplinensis Dall, 1898 †
- Species Glycymeris faujasi (Ménard de la Groye, 1807) †
- Variety Glycymeris faujasi var. elongata Sacco, 1901 †
- Variety Glycymeris faujasi var. subnorvegica Sacco, 1901 †
- Variety Glycymeris faujasi var. transiens Sacco, 1901 †
- Species Glycymeris fichteli (Deshayes, 1850) †
- Species Glycymeris fijiensis Ladd, 1934 †
- Species Glycymeris finlayi Laws, 1939 † accepted as Tucetona finlayi (Laws, 1939) †
- Species Glycymeris flammea (Reeve, 1843)
- Species Glycymeris formosa (Reeve, 1843)
- Species Glycymeris fringilla (Angas, 1872)
- Species Glycymeris gabbi Dall, 1909 accepted as Glycymeris septentrionalis (Middendorff, 1849)
- Species Glycymeris gigantea (Reeve, 1843)
- Species Glycymeris glycymeris (Linnaeus, 1758)
- Species Glycymeris gordoni Nowell-Usticke, 1959 accepted as Tucetona sericata (Reeve, 1843)
- Species Glycymeris grateloupi Maestrati & Lozouet, 1996 †
- Species Glycymeris grayana (Dunker, 1857)
- Species Glycymeris grewingki Dall, 1909 accepted as Glycymeris septentrionalis (Middendorff, 1849)
- Species Glycymeris guadalupensis A. M. Strong, 1938 accepted as Glycymeris septentrionalis (Middendorff, 1849)
- Species Glycymeris gunyoungensis Chapman & Singleton, 1925 † accepted as Tucetona gunyoungensis (Chapman & Singleton, 1925) †
- Species Glycymeris habei Matsukuma, 1984
- Species Glycymeris halli Pritchard, 1903 †
- Species Glycymeris hanleyi (Angas, 1879)
- Species Glycymeris hanzawai Nomura & Zinbo, 1934 accepted as Tucetona hanzawai (Nomura & Zinbo, 1934)
- Species Glycymeris hedleyi (E. Lamy, 1912)
- Species Glycymeris holoserica (Reeve, 1843)
- Species Glycymeris humilis (Deshayes, 1858) †
- Species Glycymeris hunti Marwick, 1928 †
- Species Glycymeris hurupiensis Marwick, 1923 † accepted as Glycymerita (Manaia) hurupiensis (Marwick, 1923) †
- Species Glycymeris huttoni Marwick, 1923 † accepted as Glycymerita (Manaia) huttoni (Marwick, 1923) †
- Species Glycymeris idensis Kanno, 1956 †
- Species Glycymeris imperialis Kuroda, 1934
- Species Glycymeris inflata (Brocchi, 1814)
- Species Glycymeris inflatoides (Telegdi-Roth, 1914) †
- Species Glycymeris insignis Pilsbry, 1906 accepted as Tucetona sordida (Tate, 1891)
- Species Glycymeris insubrica (Brocchi, 1814) accepted as Glycymeris nummaria (Linnaeus, 1758)
- Species Glycymeris intermedia (Broderip, 1832)
- Species Glycymeris intermedia (J. Sowerby, 1814) † accepted as Panopea intermedia (J. Sowerby, 1814) †
- Species Glycymeris izumoensis Matsukama & Okamoto, 1986 †
- Species Glycymeris jamaicensis Dall, 1898 †
- Species Glycymeris kaawaensis Marwick, 1923 † accepted as Glycymerita (Manaia) kaawaensis (Marwick, 1923) †
- Species Glycymeris kauaia Dall, Bartsch & Rehder, 1938 accepted as Tucetona kauaia (Dall, Bartsch & Rehder, 1938)
- Species Glycymeris keenae Willett, 1944
- Species Glycymeris kelsoensis C. E. Weaver & K. van W. Palmer, 1922 †
- Species Glycymeris kona Dall, Bartsch & Rehder, 1938 accepted as Tucetona kauaia (Dall, Bartsch & Rehder, 1938)
- Species Glycymeris laeviuscula Eichwald, 1829 accepted as Adacna laeviuscula (Eichwald, 1829)
- Species Glycymeris lamprelli M. Huber, 2010
- Species Glycymeris larvata G. D. Hanna, 1924 accepted as Glycymeris septentrionalis (Middendorff, 1849)
- Species Glycymeris latiradiata (Sandberger, 1861) †
- Species Glycymeris lenticularis (Tate, 1886) † accepted as Tucetona lenticularis (Tate, 1886) †
- Species Glycymeris lintea Olsson, 1961
- Species Glycymeris livida (Reeve, 1843)
- Species Glycymeris lloydsmithi Pilsbry & A. P. Brown, 1917 †
- Species Glycymeris longior (G. B. Sowerby I, 1833)
- Species Glycymeris lornensis Marwick, 1923 † accepted as Tucetona lornensis (Marwick, 1923) †
- Species Glycymeris lunulata (Nyst, 1836) †
- Species Glycymeris maculata (Broderip, 1832)
- Species Glycymeris magnificens Iredale, 1929 accepted as Tucetona laticostata (Quoy & Gaimard, 1835)
- Species Glycymeris mahiana Marwick, 1931 †
- Species Glycymeris manaiaensis Marwick, 1923 † accepted as Glycymerita (Manaia) manaiaensis (Marwick, 1923) †
- Species Glycymeris marmorata (Gmelin, 1791)
- Species Glycymeris marshalli Laws, 1930 †
- Species Glycymeris martini H. J. Finlay, 1927 †
- Species Glycymeris marwicki Matsukuma & Grant-Mackie, 1979 † accepted as Glycymerita marwicki (Matsukuma & Grant-Mackie, 1979) †
- Species Glycymeris maskatensis (Melvill, 1897) accepted as Tucetona guesi (Jousseaume, 1895)
- Species Glycymeris matumoriensis Nomura & Hatai, 1937 †
- Species Glycymeris maudensis Chapman & Singleton, 1925 †
- Species Glycymeris mauia Dall, Bartsch & Rehder, 1938 accepted as Tucetona arcodentiens (Dall, 1895)
- Species Glycymeris mayi (Cotton, 1947)
- Species Glycymeris mccoyi (R. M. Johnston, 1880) † accepted as Tucetona maccoyi (R. M. Johnston, 1880) †
- Species Glycymeris mendozana Maury, 1925 †
- Species Glycymeris migueliana Dall, 1916 accepted as Glycymeris septentrionalis (Middendorff, 1849)
- Species Glycymeris mindoroensis E. A. Smith, 1916 accepted as Tucetona mindoroensis (E. A. Smith, 1916)
- Species Glycymeris modesta (Angas, 1879)
- Species Glycymeris molokaia Dall, Bartsch & Rehder, 1938 accepted as Tucetona molokaia (Dall, Bartsch & Rehder, 1938)
- Species Glycymeris morum (Reeve, 1843) accepted as Tucetona sericata (Reeve, 1843)
- Species Glycymeris multicostata (G. B. Sowerby I, 1833) accepted as Tucetona multicostata (G. B. Sowerby I, 1833)
- Species Glycymeris multistriata W. H. Turton, 1932 accepted as Glycymeris connollyi Tomlin, 1926
- Species Glycymeris munda (G. B. Sowerby III, 1903)
- Species Glycymeris nakamurai Makiyama, 1927 †
- Species Glycymeris nitida Maestrati & Lozouet, 1996 †
- Species Glycymeris nummaria (Linnaeus, 1758)
- Species Glycymeris nux Dall, Bartsch & Rehder, 1938 accepted as Tucetona nux (Dall, Bartsch & Rehder, 1938)
- Species Glycymeris oahua Dall, Bartsch & Rehder, 1938 accepted as Tucetona diomedea (Dall, Bartsch & Rehder, 1938)
- Species Glycymeris obovata (Lamarck, 1819) †
- Species Glycymeris oligofaujasi Sacco, 1901 † accepted as Panopea oligofaujasi (Sacco, 1901) †
- Species Glycymeris orbicularis da Costa, 1778 accepted as Glycymeris glycymeris (Linnaeus, 1758)
- Species Glycymeris organi L. C. King, 1934 † accepted as Glycymerita organi (L. C. King, 1934) †
- Species Glycymeris ornithoptera Chapman & Singleton, 1925 † accepted as Tucetona ornithoptera (Chapman & Singleton, 1925) †
- Species Glycymeris ovata (Broderip, 1832)
- Species Glycymeris ozawai Thach, 2021
- Species Glycymeris pectinata (Gmelin, 1791) accepted as Tucetona pectinata (Gmelin, 1791)
- Species Glycymeris pectiniformis (Lamarck, 1819) accepted as Tucetona pectunculus (Linnaeus, 1758)
- Species Glycymeris pectunculus (Linnaeus, 1758) accepted as Tucetona pectunculus (Linnaeus, 1758)
- Species Glycymeris penelevis Cotton, 1930 accepted as Glycymeris striatularis (Lamarck, 1819)
- Species Glycymeris pennacea (Lamarck, 1819) accepted as Glycymeris decussata (Linnaeus, 1758)
- Species Glycymeris persimilis (Iredale, 1939)
- Species Glycymeris pertusa (Reeve, 1843)
- Species Glycymeris petropolitana Stenzel & Twining, 1957 †
- Species Glycymeris pilosa (Linnaeus, 1767)
- Species Glycymeris pilosus (Linnaeus, 1767) accepted as Glycymeris pilosa (Linnaeus, 1767)
- Species Glycymeris pilsbryi (Yokoyama, 1920)
- Species Glycymeris planiuscula Chapman & Singleton, 1925 † accepted as Melaxinaea planiuscula (Chapman & Singleton, 1925) †
- Species Glycymeris plicata Eichwald, 1829 accepted as Hypanis plicata (Eichwald, 1829)
- Species Glycymeris poustagnacensis Maestrati & Lozouet, 1996 †
- Species Glycymeris prashadi Nicol, 1951 accepted as Tucetona prashadi (Nicol, 1951)
- Species Glycymeris prianganensis van Regteren Altena & Beets, 1944 †
- Species Glycymeris pseudaustralis Singleton, 1941 †
- Species Glycymeris pseudocuevensis del Río & Camacho, 1998 †
- Species Glycymeris pseudopulvinata (A. d'Orbigny, 1850) †
- Species Glycymeris pulvinata (Lamarck, 1805) †
- Species Glycymeris puruensis (K. Martin, 1915) †
- Species Glycymeris queenslandica Hedley, 1906
- Species Glycymeris queketti (G. B. Sowerby III, 1897)
- Species Glycymeris radians (Lamarck, 1819)
- Species Glycymeris radiolyrata Moerdijk & van Nieulande, 1995 †
- Species Glycymeris rafaelmesai Nolf & Swinnen, 2013
- Species Glycymeris rangatira L. C. King, 1934 † accepted as Glycymerita rangatira (L. C. King, 1934) †
- Species Glycymeris rapanuiensis Marwick, 1923 †
- Species Glycymeris rectidorsalis Marwick, 1931 † accepted as Glycymerita rectidorsalis (Marwick, 1931) †
- Species Glycymeris reevei (Mayer, 1868)
- Species Glycymeris reevei Marwick, 1931 † accepted as Glycymerita marwicki (Matsukuma & Grant-Mackie, 1979) †
- Species Glycymeris regularis Ortmann, 1900 † accepted as Panopea regularis (Ortmann, 1900) †
- Species Glycymeris rembangensis Pannekoek, 1936 †
- Species Glycymeris renkerorum Thach, 2021
- Species Glycymeris robusta Marwick, 1923 † accepted as Glycymerita (Glycymerita) robusta (Marwick, 1923) †
- Species Glycymeris rota (Cotton, 1947) † accepted as Glycymeris tenuicostata (Reeve, 1843)
- Species Glycymeris rotunda (Dunker, 1882)
- Species Glycymeris sagittata (Gabb, 1864) †
- Species Glycymeris sanmatiensis Bayer & Gordillo, 2013 †
- Species Glycymeris scripta (Born, 1778)
- Species Glycymeris septentrionalis (Middendorff, 1849)
- Species Glycymeris shrimptoni Marwick, 1923 †
- Species Glycymeris shutoi Matsukuma, 1981
- Species Glycymeris spectralis Nicol, 1952
- Species Glycymeris stellata (Bruguière, 1789)
- Species Glycymeris striatularis (Lamarck, 1819)
- Species Glycymeris strigilata (G. B. Sowerby I, 1833) accepted as Tucetona strigilata (G. B. Sowerby I, 1833)
- Species Glycymeris subglobosa Suter, 1917 † accepted as Glycymerita subglobosa (Suter, 1917) †
- Species Glycymeris subobsoleta (P. P. Carpenter, 1864) accepted as Glycymeris septentrionalis (Middendorff, 1849)
- Species Glycymeris subovata (Say, 1824) †
- Species Glycymeris subpectiniformis Nomura & Zinbo, 1934 accepted as Tucetona subpectiniformis (Nomura & Zinbo, 1934)
- Species Glycymeris subradians Tate, 1902 †
- Species Glycymeris subtilis (Nicol, 1956) accepted as Tucetona subtilis Nicol, 1956
- Species Glycymeris subtrigona Ihering, 1907 †
- Species Glycymeris taitaoensis Frassinetti & Covacevich, 1991 †
- Species Glycymeris taverai Frassinetti & Covacevich, 1984 †
- Species Glycymeris taylori (Angas, 1879)
- Species Glycymeris tellinaeformis (Reeve, 1843)
- Species Glycymeris tenuicostata (Reeve, 1843)
- Species Glycymeris tenuis (Watelet, 1853) †
- Species Glycymeris terebratularis (Lamarck, 1805) †
- Species Glycymeris texta (Dujardin, 1837) †
- Species Glycymeris thomsoni Marwick, 1929 accepted as Glycymerita thomsoni (Marwick, 1929) †
- Species Glycymeris tohunga L. C. King, 1934 † accepted as Glycymerita tohunga (L. C. King, 1934) †
- Species Glycymeris totomiensis Makiyama, 1927 †
- Species Glycymeris trelissickensis Marwick, 1923 †
- Species Glycymeris trilobicosta Pilsbry & A. P. Brown, 1917 †
- Species Glycymeris tumefactus Pilsbry & A. P. Brown, 1917 †
- Species Glycymeris undata (Linnaeus, 1758)
- Species Glycymeris undata (Linnaeus, 1758) sensu van Regteren Altena, 1971 accepted as Glycymeris marmorata (Gmelin, 1791)
- Species Glycymeris vanhengstumi Goud & Gulden, 2009
- Species Glycymeris variabilis (J. De C. Sowerby, 1824) †
- Species Glycymeris velutina Suter, 1908 accepted as Glycymeris modesta (Angas, 1879)
- Species Glycymeris vestita (Dunker, 1877) accepted as Glycymeris aspersa (A. Adams & Reeve, 1850)
- Species Glycymeris violacescens (Lamarck, 1819) accepted as Glycymeris nummaria (Linnaeus, 1758)
- Species Glycymeris vitrea Eichwald, 1829 accepted as Adacna vitrea vitrea (Eichwald, 1829)
- Species Glycymeris wagenwoorti Lacourt, 1977 accepted as Glycymeris glycymeris (Linnaeus, 1758)
- Species Glycymeris waipipiensis Marwick, 1923 †
- Species Glycymeris waitakiensis Marwick, 1923 †
- Species Glycymeris wateleti (Deshayes, 1858) †
- Species Glycymeris winlockensis Effinger, 1938 †
- Species Glycymeris yessoensis (G. B. Sowerby III, 1889)
- Genus Glycymerita H. J. Finlay & Marwick, 1937 † (19)
- Genus Grandaxinaea Iredale, 1931 accepted as Tucetona Iredale, 1939
- Genus Grandaxinaea A. W. B. Powell, 1976 accepted as Tucetona Iredale, 1939
- Genus Melaxinaea Iredale, 1930 (2)
- Genus Nucunella A. d'Orbigny, 1849 † (2)
- Genus Pectunculus Lamarck, 1799 accepted as Tucetona Iredale, 1939 (2)
- Genus Petunculus [sic] accepted as Pectunculus Lamarck, 1799
- Genus Pseudaxinea Monterosato, 1892 accepted as Glycymeris da Costa, 1778
- Genus Tuceta Röding, 1798 accepted as Glycymeris da Costa, 1778
- Genus Tucetilla Iredale, 1939 accepted as Glycymeris (Tucetilla) Iredale, 1939
- Genus Tucetona Iredale, 1939 (68)
- Genus Tucetonella T. Habe, 1961 accepted as Glycymeris (Tucetonella) T. Habe, 1961
- Genus Tucetopsis Iredale, 1939 accepted as Tucetona Iredale, 1939
- Genus Veletuceta Iredale, 1931 accepted as Glycymeris da Costa, 1778
- Family Noetiidae R. B. Stewart, 1930 (91)
- Family Parallelodontidae Dall, 1898 (48)
- Family Pectunculidae Leach, 1847 accepted as Glycymerididae Dall, 1908 (1847)
- Superfamily Glyptarcoidea J. C. W. Cope, 1996 † (11)
- Superfamily Limopsacea accepted as Limopsoidea Dall, 1895
- Superfamily Limopsoidea Dall, 1895 (301)
- Order Colpomyida † (6)
- Order Cyrtodontida † (66)
- Order Limida (358)
- Order Myalinida † (576)
- Order Mytilida (707)
- Order Ostreida (706)
- Order Pectinida (3 004)
- Order Pteriida accepted as Ostreida
- Order Pteriomorphia incertae sedis † (1)
- Superfamily Yunannioidea R.-J. Zhang & Z.-J. Niu, 2021 † (2)
- Family Ischyrodontidae Scarlato & Starobogatov, 1979 † (2)
- Family Matheriidae Scarlato & Starobogatov, 1979 † (1)
- Family Myodakryotidae Tunnicliff, 1987 † (4)
- Subclass Bivalvia incertae sedis (7)
- Subclass Palaeotaxodonta accepted as Nuculida
- Subclass Paleoheterodonta accepted as Palaeoheterodonta
- Subclass Protobranchia (1 365)
- Infraclass Cryptodonta † (342)
- Class Caudofoveata (143)
- Class Cephalopoda (1 834)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 753)
- 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