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)
- Subclass Autobranchia (23 278)
- Infraclass Heteroconchia (16 634)
- Subterclass Archiheterodonta (1 205)
- Subterclass Euheterodonta (11 356)
- Superorder Anomalodesmata (987)
- Superorder Imparidentia (10 336)
- Order Adapedonta (260)
- Order Cardiida (3 055)
- Order Galeommatida (791)
- Order Gastrochaenida (43)
- Order Hiatellida represented as Adapedonta
- Order Hippuritida † (321)
- Order Lucinida (997)
- Superfamily Lucinacea accepted as Lucinoidea J. Fleming, 1828
- Superfamily Lucinoidea J. Fleming, 1828 (801)
- Family Codakiidae Iredale, 1937 accepted as Codakiinae Iredale, 1937
- Family Corbidae Stoliczka, 1870 accepted as Fimbriinae Nicol, 1950
- Family Fimbriidae Nicol, 1950 (1870) accepted as Fimbriinae Nicol, 1950
- Family Lucinidae J. Fleming, 1828 (793)
- Subfamily Codakiinae Iredale, 1937 (102)
- Subfamily Corbinae Stoliczka, 1870 accepted as Fimbriinae Nicol, 1950
- Subfamily Fimbriinae Nicol, 1950 (71)
- Subfamily Leucosphaerinae J. D. Taylor & Glover, 2011 (96)
- Subfamily Lucinidae incertae sedis (71)
- Subfamily Lucininae J. Fleming, 1828 (307)
- Genus Austriella Tenison Woods, 1881 (1)
- Genus Barbierella Chavan, 1938 (5)
- Genus Bathyaustriella Glover, J. D. Taylor & Rowden, 2004 (1)
- Genus Bellucina Dall, 1901 accepted as Cardiolucina Sacco, 1901
- Genus Boeuvia Chavan, 1948 † accepted as Bourdotia Dall, 1901
- Genus Bourdotia Dall, 1901 (6)
- Genus Bretskya Glover & J. D. Taylor, 2007 (1)
- Genus Callucinella Chavan, 1961 † (2)
- Genus Cardiolucina Sacco, 1901 (21)
- Genus Cavilinga Chavan, 1937 (11)
- Genus Chavania Glover & J. D. Taylor, 2001 (2)
- Genus Clathrolucina J. D. Taylor & Glover, 2013 (1)
- Genus Cyclas Mörch, 1853 accepted as Divalinga Chavan, 1951
- Genus Dentilucina P. Fischer, 1887 accepted as Phacoides Agassiz, 1846
- Genus Discolucina Glover & J. D. Taylor, 2007 (2)
- Genus Divalinga Chavan, 1951 (13)
- Genus Divaricella E. von Martens, 1880 (6)
- Genus Eamesiella Chavan, 1951 accepted as Austriella Tenison Woods, 1881
- Genus Easmithia Glover & J. D. Taylor, 2016 (5)
- Genus Egraca Leach, 1852 accepted as Lucina Bruguière, 1797
- Genus Falsolucinoma Cosel, 2006 (1)
- Genus Ferrocina Glover & J. D. Taylor, 2007 (6)
- Genus Funafutia Glover & J. D. Taylor, 2001 (1)
- Genus Gibbolucina Cossmann, 1904 (16)
- Genus Guyanella J. D. Taylor & Glover, 2016 (1)
- Genus Here Gabb, 1866 (4)
- Genus Imparilucina J. D. Taylor & Glover, 2021 (1)
- Genus Indoaustriella Glover, J. D. Taylor & S. T. Williams, 2008 (5)
- Genus Jallenia Glover & J. D. Taylor, 2016 (1)
- Genus Joellina Cosel, 2006 (1)
- Genus Keletistes P. G. Oliver, 1986 (2)
- Genus Lamellolucina J. D. Taylor & Glover, 2002 (7)
- Genus Lamylucina Cosel, 2006 (2)
- Genus Lepidolucina Glover & J. D. Taylor, 2007 (3)
- Genus Linga De Gregorio, 1885 accepted as Lucina Bruguière, 1797
- Genus Liralucina Glover & J. D. Taylor, 2007 (8)
- Genus Loripes Poli, 1791 (6)
- Genus Loripoderma Poli, 1795 accepted as Loripes Poli, 1791
- Genus Lucina Bruguière, 1797 (51)
- Genus Lucinella Monterosato, 1883 (5)
- Genus Lucinida A. d'Orbigny, 1846 accepted as Loripes Poli, 1791
- Genus Lucinisca Dall, 1901 (13)
- Genus Megaxinus Brugnone, 1880 (13)
- Genus Nevenulora Iredale, 1930 (3)
- Genus Notocina J. D. Taylor & Glover, 2019 (1)
- Genus Parvidontia Glover & J. D. Taylor, 2007 (2)
- Genus Parvilucina Dall, 1901 (18)
- Genus Paslucina Olsson, 1964 †
- Genus Phacoides Agassiz, 1846 (6)
- Subgenus Phacoides (Armimiltha) Olsson & Harbison, 1953 † accepted as Armimiltha Olsson & Harbison, 1953 †
- Subgenus Phacoides (Bellucina) Dall, 1901 accepted as Bellucina Dall, 1901
- Subgenus Phacoides (Callucina) Dall, 1901 accepted as Callucina Dall, 1901
- Subgenus Phacoides (Cardiolucina) Sacco, 1901 accepted as Cardiolucina Sacco, 1901
- Subgenus Phacoides (Cavilucina) P. Fischer, 1887 accepted as Cavilucina P. Fischer, 1887 †
- Subgenus Phacoides (Dallucina) Olsson & Harbison, 1953 † accepted as Pleurolucina Dall, 1901
- Subgenus Phacoides (Epilucina) Dall, 1901 accepted as Epilucina Dall, 1901
- Subgenus Phacoides (Gibbolucina) Cossmann, 1904 accepted as Gibbolucina Cossmann, 1904
- Subgenus Phacoides (Here) Gabb, 1866 accepted as Here Gabb, 1866
- Subgenus Phacoides (Linga) De Gregorio, 1885 accepted as Lucina Bruguière, 1797
- Subgenus Phacoides (Lucinisca) Dall, 1901 accepted as Lucinisca Dall, 1901
- Subgenus Phacoides (Lucinoma) Dall, 1901 accepted as Lucinoma Dall, 1901
- Subgenus Phacoides (Miltha) H. Adams & A. Adams, 1857 accepted as Miltha H. Adams & A. Adams, 1857
- Subgenus Phacoides (Parvilucina) Dall, 1901 accepted as Parvilucina Dall, 1901
- Subgenus Phacoides (Pleurolucina) Dall, 1901 accepted as Pleurolucina Dall, 1901
- Subgenus Phacoides (Pseudomiltha) P. Fischer, 1887 † accepted as Pseudomiltha P. Fischer, 1887 †
- Subgenus Phacoides (Recticardo) Cossmann, 1908 † accepted as Miltha (Recticardo) Cossmann, 1908 †
- Subgenus Phacoides (Stewartia) Olsson & Harbison, 1953 † accepted as Stewartia Olsson & Harbison, 1953
- Species Phacoides adansoni (A. d'Orbigny, 1840) accepted as Lucina adansoni A. d'Orbigny, 1840
- Species Phacoides aequalis Thiele, 1931 accepted as Lucinoma aequalis (Thiele, 1931)
- Species Phacoides bermudensis Dall, 1901 accepted as Lucinoma bermudensis (Dall, 1901)
- Species Phacoides bonneti Cossmann, 1923 † accepted as Monitilora bonneti (Cossmann, 1923)
- Species Phacoides borealis (Linnaeus, 1767) accepted as Lucinoma borealis (Linnaeus, 1767)
- Species Phacoides briarti Cossmann, 1908 † accepted as Barbierella briarti (Cossmann, 1908) †
- Species Phacoides calhounensis Dall, 1903 † accepted as Lucinisca calhounensis (Dall, 1903) †
- Species Phacoides cancellatus Nowell-Usticke, 1969 accepted as Codakia cubana Dall, 1901
- Species Phacoides capensis Jaeckel & Thiele, 1931 accepted as Lucinoma capensis (Jaeckel & Thiele, 1931)
- Species Phacoides columbella (Lamarck, 1818) † accepted as Lucina columbella Lamarck, 1818 †
- Species Phacoides congoensis Jaeckel & Thiele, 1931 accepted as Cardiolucina lamothei (Dautzenberg, 1912)
- Species Phacoides coupoisi Klein, 1967 accepted as Parvilucina pectinella (C. B. Adams, 1852)
- Species Phacoides dautzenbergi E. Lamy, 1920 accepted as Lamellolucina dentifera (Jonas, 1846)
- Species Phacoides diaboli Dickerson, 1914 †
- Species Phacoides djunggranganensis (K. Martin, 1916) †
- Species Phacoides eucosmia Dall, 1901 accepted as Cardiolucina eucosmia (Dall, 1901)
- Species Phacoides goreensis Jaeckel, 1927 accepted as Lucina goreensis (Jaeckel, 1927)
- Species Phacoides joannis Dall, 1905 accepted as Miltha xantusi (Dall, 1905)
- Species Phacoides kemedjingensis (K. Martin, 1916) †
- Species Phacoides legouxi Nicklès, 1952 accepted as Lucinella legouxi (Nicklès, 1952)
- Species Phacoides lepis (Koenen, 1885) †
- Species Phacoides liana Pilsbry, 1931 accepted as Lucinisca centrifuga (Dall, 1901)
- Species Phacoides malcolmensis Melvill, 1918 accepted as Chavania erythraea (Issel, 1869)
- Species Phacoides minutus Thiele, 1930 accepted as Chavania striata (Tokunaga, 1906)
- Species Phacoides montensis Cossmann, 1908 † accepted as Miltha montensis (Cossmann, 1908) †
- Species Phacoides muirensis Dickerson, 1914 †
- Species Phacoides naviculus Cossmann, 1905 † accepted as Barbierella navicula (Cossmann, 1905) †
- Species Phacoides nuttalli (Conrad, 1837) accepted as Lucinisca nuttalli (Conrad, 1837)
- Species Phacoides pectinatus (Gmelin, 1791)
- Species Phacoides peritaphros Barnard, 1964 accepted as Cardiolucina peritaphros (Barnard, 1964)
- Species Phacoides philippinarum (Reeve, 1850) accepted as Austriella corrugata (Deshayes, 1843)
- Species Phacoides pisiformis Thiele, 1930 accepted as Cardiolucina pisiformis (Thiele, 1930)
- Species Phacoides plesiolophus Dall, 1900 † accepted as Lucinisca plesiolophus (Dall, 1900) †
- Species Phacoides plicatocostata (A. d'Orbigny, 1842) †
- Species Phacoides pronatus É. Vincent, 1930 †
- Species Phacoides pseudocorbis Nicklès, 1952 † accepted as Myrtea pseudocorbis (Nicklès, 1952)
- Species Phacoides quadrata Dickerson, 1914 † accepted as Lucina dickersoni Pacaud, Coppini, Buisson & F. Meunier, 2024 †
- Species Phacoides quadricostata Dall, 1903 † accepted as Pleurolucina quadricostata (Dall, 1903) †
- Species Phacoides reyrei Nicklès, 1955 accepted as Lamellolucina reyrei (Nicklès, 1955)
- Species Phacoides roigi Maury, 1925 † accepted as Lucinisca roigi (Maury, 1925) †
- Species Phacoides rugosus Hedley, 1909 accepted as Cardiolucina rugosa (Hedley, 1909)
- Species Phacoides saldanhae Barnard, 1964 accepted as Lucinoma saldanhae (Barnard, 1964)
- Species Phacoides scarlatoi Zorina, 1978 accepted as Indoaustriella scarlatoi (Zorina, 1978)
- Species Phacoides scotti Wilckens, 1910 † accepted as Lucina scotti (Wilckens, 1910) †
- Species Phacoides semperiana (Issel, 1869) accepted as Cardiolucina semperiana (Issel, 1869)
- Species Phacoides sepes Barnard, 1964 accepted as Monitilora sepes (Barnard, 1964)
- Species Phacoides sharmani Wilckens, 1910 † accepted as Saxolucina sharmani (Wilckens, 1910) †
- Species Phacoides solvayi É. Vincent, 1930 † accepted as Miltha solvayi (É. Vincent, 1930) †
- Species Phacoides sperabilis Hedley, 1909 accepted as Liralucina sperabilis (Hedley, 1909)
- Species Phacoides sudes Barnard, 1964 accepted as Myrtea sudes (Barnard, 1964)
- Species Phacoides tithonis Dall, 1903 † accepted as Pleurolucina tithonis (Dall, 1903) †
- Species Phacoides tjibodasiana (K. Martin, 1922) †
- Species Phacoides venustus (R. A. Philippi, 1847) accepted as Lepidolucina venusta (R. A. Philippi, 1847)
- Genus Pillucina Pilsbry, 1921 (10)
- Genus Pleurolucina Dall, 1901 (12)
- Genus Plicolucina Glover, J. D. Taylor & Slack-Smith, 2003 (1)
- Genus Pompholigina Dall, 1901 (1)
- Genus Pusillolucina J. D. Taylor & Glover, 2019 (5)
- Genus Quasilucina R. B. Stewart, 1930 † accepted as Lucina Bruguière, 1797
- Genus Radiolucina Britton, 1972 (4)
- Genus Rasta J. D. Taylor & Glover, 2000 (2)
- Genus Rastafaria J. D. Taylor & Glover, 1997 accepted as Rasta J. D. Taylor & Glover, 2000
- Genus Rugalucina J. D. Taylor & Glover, 2019 (5)
- Genus Scabrilucina J. D. Taylor & Glover, 2013 (3)
- Genus Semelilucina Cosel & Bouchet, 2008 (1)
- Genus Stewartia Olsson & Harbison, 1953 (3)
- Genus Strigilla Gray, 1851 accepted as Lucinella Monterosato, 1883
- Genus Sydlorina Iredale, 1930 accepted as Pillucina Pilsbry, 1921
- Genus Troendleina Cosel & Bouchet, 2008 (3)
- Genus Wallucina Iredale, 1930 (3)
- Subfamily Milthinae Chavan, 1969 (29)
- Subfamily Monitilorinae J. D. Taylor & Glover, 2011 (12)
- Subfamily Myrteinae Chavan, 1969 (72)
- Subfamily Pegophyseminae J. D. Taylor & Glover, 2011 (32)
- Genus Ezolucina Amano, Jenkins, Kurihara & Kiel, 2008 † (1)
- Family Mactromyidae L. R. Cox, 1929 † accepted as Edmondiidae W. King, 1850 †
- Family Paracyclidae P. A. Johnston, 1993 † (8)
- Superfamily Thyasiroidea Dall, 1900 (1895) (196)
- Order Megalodontida † (141)
- Order Modiomorphida † (94)
- Order Myacea accepted as Myida
- Order Myida (924)
- Order Sphaeriida (662)
- Order Venerida (2 821)
- 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 † (90)
- Superfamily Kalenteroidea Marwick, 1953 † (39)
- 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 (4 072)
- Superorder Heteroconchia incertae sedis † (1)
- Infraclass Pteriomorphia (6 644)
- 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 (1 832)
- Class Conchifera accepted as Bivalvia
- Class Cricoconarida † (1)
- Class Gastropoda (102 679)
- 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