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Mollusca (133 306)
Subphylum Aculifera
Subphylum Conchifera
Subphylum Placophora accepted as Polyplacophora
Superclass Aplacophora
Class Amphineura accepted as Aculifera
Class Bivalvia (25 081)
Subclass Autobranchia (23 353)
Infraclass Heteroconchia (16 677)
Infraclass Pteriomorphia (6 676)
Superorder Eupteriomorphia
Order Arcida (1 227)
Order Colpomyida † (6)
Order Cyrtodontida † (67)
Order Limida (359)
Order Myalinida † (577)
Order Mytilida (709)
Order Ostreida (713)
Order Pectinida (3 008)
Superfamily Anomiacea accepted as Anomioidea Rafinesque, 1815
Superfamily Anomioidea Rafinesque, 1815 (73)
Superfamily Aviculopectinoidea Meek & Hayden, 1865 † (99)
Superfamily Buchioidea L. R. Cox, 1953 † (86)
Superfamily Chaenocardioidea S. A. Miller, 1889 † (20)
Superfamily Dimyoidea P. Fischer, 1886 (42)
Superfamily Entolioidea Teppner, 1922 † (106)
Superfamily Euchondrioidea Newell, 1938 † (14)
Superfamily Eurydesmatoidea Reed, 1932 † (2)
Superfamily Heteropectinoidea Beurlen, 1954 † (92)
Superfamily Leiopectinoidea Krasilova, 1959 † (7)
Superfamily Oxytomoidea Ichikawa, 1958 † (20)
Superfamily Pectinacea accepted as Pectinoidea Rafinesque, 1815
Superfamily Pectinoidea Rafinesque, 1815 (2 303)
Family Cyclochlamydidae Dijkstra & Maestrati, 2012 (34)
Family Neitheidae Sobetski, 1960 † (54)
Family Pectinidae Rafinesque, 1815 (1 724)
Subfamily Adamussiinae T. Habe, 1977 accepted as Adamussiini T. Habe, 1977
Subfamily Aequipectininae F. Nordsieck, 1969 accepted as Aequipectinini F. Nordsieck, 1969
Subfamily Camptonectinae Habe, 1977 (121)
Subfamily Concentrichlamydinae Romanov, 1985 † accepted as Chlamydini Teppner, 1922
Subfamily Fortipectininae K. Masuda, 1963 accepted as Fortipectinini K. Masuda, 1963
Subfamily Hemipectinae T. Habe, 1977 accepted as Chlamydini Teppner, 1922
Subfamily Hemipectininae T. Habe, 1977 accepted as Chlamydini Teppner, 1922
Subfamily Hinnitinae Habe, 1977 accepted as Pedinae Bronn, 1862
Subfamily Macrochlamydinae Kasum-Zade, 2003 accepted as Chlamydini Teppner, 1922
Subfamily Mclearniinae Shurygin & Lutikov, 1991 † (7)
Subfamily Palliolinae Korobkov, 1960 (128)
Subfamily Pectinidae incertae sedis (2)
Subfamily Pectininae Rafinesque, 1815 (633)
Tribe Aequipectinini F. Nordsieck, 1969 (253)
Genus Aequipecten P. Fischer, 1886 (92)
Subgenus Aequipecten (Aequipecten) P. Fischer, 1886 accepted as Aequipecten P. Fischer, 1886
Subgenus Aequipecten (Corymbichlamys) Iredale, 1939 accepted as Cryptopecten Dall, Bartsch & Rehder, 1938
Subgenus Aequipecten (Cryptopecten) Dall, Bartsch & Rehder, 1938 † accepted as Cryptopecten Dall, Bartsch & Rehder, 1938
Subgenus Aequipecten (Flexopecten) Sacco, 1897 accepted as Flexopecten Sacco, 1897
Subgenus Aequipecten (Leptopecten) A. E. Verrill, 1897 accepted as Leptopecten A. E. Verrill, 1897
Subgenus Aequipecten (Lindapecten) Petuch, 1995 accepted as Lindapecten Petuch, 1995
Subgenus Aequipecten (Pacipecten) Olsson, 1961 accepted as Leptopecten A. E. Verrill, 1897
Subgenus Aequipecten (Perapecten) H. P. Wagner, 1985 accepted as Perapecten H. P. Wagner, 1985
Subgenus Aequipecten (Plagioctenium) Dall, Bartsch & Rehder, 1938 accepted as Argopecten Monterosato, 1889
Species Aequipecten achtariensis (Eames & L. R. Cox, 1956) †
Species Aequipecten adelinae (Rovereto, 1900) †
Species Aequipecten aequivalvis (J. Sowerby, 1816) † accepted as Pseudopecten equivalvis (J. Sowerby, 1816) †
Species Aequipecten ajatensis (Glazunova, 1960) †
Species Aequipecten alli (Dall, Bartsch & Rehder, 1938) accepted as Cryptopecten bullatus (Dautzenberg & Bavay, 1912)
Species Aequipecten angelonii (De Stefani & Pantanelli, 1878) †
Species Aequipecten angustus (T. Fuchs, 1879) † accepted as Chlamys angusta (T. Fuchs, 1879) †
Species Aequipecten anjuensis Milova, 1969 † accepted as Kolymonectes anjuensis (Milova, 1969) †
Species Aequipecten antonitaensis Durham, 1950 † accepted as Argopecten antonitaensis (Durham, 1950) †
Species Aequipecten anvenustus (Glazunova, 1960) †
Species Aequipecten apenninicus (Rovereto, 1898) †
Species Aequipecten asmariensis (Eames & L. R. Cox, 1956) †
Species Aequipecten atlanticus (E. A. Smith, 1890) accepted as Perapecten atlanticus (E. A. Smith, 1890)
Species Aequipecten bernardi (R. A. Philippi, 1851) accepted as Cryptopecten bernardi (R. A. Philippi, 1851)
Species Aequipecten biaritzensis (d'Archiac, 1846) †
Species Aequipecten bicknelli Sacco, 1897 †
Species Aequipecten bierringi Rosenkrantz, 1942 † accepted as Pseudopecten equivalvis (J. Sowerby, 1816) †
Species Aequipecten bishakensis (Eames & L. R. Cox, 1956) †
Species Aequipecten bollenensis (Mayer-Eymar, 1876) †
Species Aequipecten bornhardti (L. R. Cox, 1927) †
Species Aequipecten brandesi J. Böhm, 1922 † accepted as Lyriochlamys septemplicata (Nilsson, 1827) †
Species Aequipecten buvignieri Dechaseaux, 1936 † accepted as Radulopecten varians (F. A. Roemer, 1836) †
Species Aequipecten camaretensis (Fontannes, 1878) †
Species Aequipecten canalis (A. P. Brown & Pilsbry, 1913) † accepted as Mimachlamys canalis (A. P. Brown & Pilsbry, 1913) †
Species Aequipecten catalaunicus (Almera & Bofill y Poch, 1897) †
Species Aequipecten caucasicus Pchelintsev, 1931 † accepted as Minervapecten caucasicus (Pchelintsev, 1931) †
Species Aequipecten celestini (Fontannes, 1878) †
Species Aequipecten chickaria (Mansfield, 1940) †
Species Aequipecten chiruensis (Eames & L. R. Cox, 1956) †
Species Aequipecten circularis (G. B. Sowerby I, 1835) accepted as Argopecten irradians concentricus (Say, 1822)
Species Aequipecten clinchfieldensis (G. D. Harris, 1919) †
Species Aequipecten commutatus (Monterosato, 1875) accepted as Perapecten commutatus (Monterosato, 1875)
Species Aequipecten compositus (Goldfuss, 1833) †
Species Aequipecten csepreghymeznericsae (Báldi, 1961) †
Species Aequipecten cyrenaicus R. B. Newton, 1911 † accepted as Chlamys cyrenaica (R. B. Newton, 1911) †
Species Aequipecten dallasi (E. K. Jordan & Hertlein, 1926) † accepted as Chagrepecten dallasi (E. K. Jordan & Hertlein, 1926) †
Species Aequipecten dalmaticus Brusina, 1907
Species Aequipecten degrangei (Cossmann & Peyrot, 1914) †
Species Aequipecten deletus (Michelotti, 1861) † accepted as Costellamussiopecten deletus (Michelotti, 1861) †
Species Aequipecten deltoideus (L. R. Cox, 1927) †
Species Aequipecten densicinctus (Grzybowski, 1899) † accepted as Pecten densicinctus Grzybowski, 1899 †
Species Aequipecten dentronensis Joksimowitsch, 1911 † accepted as Aequipecten opercularis opercularis (Linnaeus, 1758)
Species Aequipecten diaphanus (Du Bois de Montpéreux, 1831) †
Species Aequipecten diprosopus (Fontannes, 1878) †
Species Aequipecten elegans (Andrzejowski, 1830) †
Species Aequipecten eugeniarum (Eames & L. R. Cox, 1956) †
Species Aequipecten exasperatus (G. B. Sowerby II, 1842) accepted as Lindapecten exasperatus (G. B. Sowerby II, 1842)
Species Aequipecten exlaevigatus Sacco, 1897 † accepted as Palliolum hausmanni hausmanni (Goldfuss, 1835) †
Species Aequipecten exspinulosus Sacco, 1897 † accepted as Aequipecten biaritzensis (d'Archiac, 1846) †
Species Aequipecten falki J. Böhm, 1922 † accepted as Lyropecten ternatus (Münster, 1833) †
Species Aequipecten felipponei (Dall, 1922) accepted as Flexopecten felipponei (Dall, 1922)
Species Aequipecten flabelloides Schaffer, 1910 † accepted as Aequipecten diprosopus (Fontannes, 1878) †
Species Aequipecten flabellum (Gmelin, 1791)
Species Aequipecten gainestownensis (Mansfield, 1940) †
Species Aequipecten gentoni (Fontannes, 1880) † accepted as Aequipecten celestini (Fontannes, 1878) †
Species Aequipecten glaber (Linnaeus, 1758) accepted as Flexopecten glaber (Linnaeus, 1758)
Species Aequipecten glendonensis (Mansfield, 1940) †
Species Aequipecten glyptus (A. E. Verrill, 1882)
Species Aequipecten grzybowskii Teppner, 1922 †
Species Aequipecten hataii Kanno, 1958 † accepted as Cryptopecten hataii (Kanno, 1958) †
Species Aequipecten heliacus (Dall, 1925)
Species Aequipecten hobleyi (L. R. Cox, 1930) †
Species Aequipecten holroydi (Eames & L. R. Cox, 1956) †
Species Aequipecten honi (É. Vincent, 1928) †
Species Aequipecten infractus J. Böhm, 1922 † accepted as Lyriochlamys septemplicata (Nilsson, 1827) †
Species Aequipecten iranicus (Eames & L. R. Cox, 1956) †
Species Aequipecten iranicus Krumbeck, 1922 † accepted as Indopecten glaber (Douglas, 1929) †
Species Aequipecten irradians (Lamarck, 1819) accepted as Argopecten irradians (Lamarck, 1819)
Species Aequipecten judaicus (L. R. Cox, 1934) †
Species Aequipecten kenti (Eames & L. R. Cox, 1956) †
Species Aequipecten kesadoensis Tashiro, 1990 †
Species Aequipecten kiwazinensis (Eames & L. R. Cox, 1956) †
Species Aequipecten kotsubu (Kimura, 1951) †
Species Aequipecten kuhgaluensis (Eames & L. R. Cox, 1956) †
Species Aequipecten kyushuensis (Nagao, 1928) † accepted as Cryptopecten kyushuensis (Nagao, 1928) †
Species Aequipecten lessepsii (T. Fuchs, 1877) † accepted as Mirapecten lessepsii (T. Fuchs, 1877) †
Species Aequipecten liberatus (Cossmann & Peyrot, 1914) †
Species Aequipecten lindae (Petuch, 1995) accepted as Lindapecten lindae Petuch, 1995
Species Aequipecten lineolaris (Lamarck, 1819) accepted as Argopecten lineolaris (Lamarck, 1819)
Species Aequipecten lobecki (Hubbard, 1920) †
Species Aequipecten macrotis (G. B. Sowerby I, 1847) †
Species Aequipecten mafiaensis (Eames & L. R. Cox, 1956) †
Species Aequipecten malvinae (Du Bois de Montpéreux, 1831) †
Species Aequipecten maximiliani Kuhn, 1936 † accepted as Pseudopecten equivalvis (J. Sowerby, 1816) †
Species Aequipecten mekranicus (Eames & L. R. Cox, 1956) †
Species Aequipecten minutus (Nicklès, 1955) accepted as Aequipecten nicklesi Dijkstra, 1998
Species Aequipecten mioalternans Sacco, 1897 †
Species Aequipecten miocenicus (Michelotti, 1861) †
Species Aequipecten mtoniensis (Eames & L. R. Cox, 1956) †
Species Aequipecten multiscabrellus Sacco, 1897 †
Species Aequipecten muscosus (W. Wood, 1828) accepted as Lindapecten muscosus (W. Wood, 1828)
Species Aequipecten nicklesi Dijkstra, 1998
Species Aequipecten northamptonii (Michelotti, 1839) † accepted as Costellamussiopecten northamptonii (Michelotti, 1839) †
Species Aequipecten novemfibrosus Azaryan, 1963 † accepted as Pamiropecten novemfibrosus (Azarian, 1963) †
Species Aequipecten nux (Reeve, 1853) accepted as Cryptopecten nux (Reeve, 1853)
Species Aequipecten oblitaquensis Sacco, 1897 † accepted as Costellamussiopecten northamptonii (Michelotti, 1839) †
Species Aequipecten octoplicoides (Hertlein, 1931) †
Species Aequipecten ogawensis Kimura, 1951 † accepted as Radulopecten ogawensis (Kimura, 1951) †
Species Aequipecten oligocenicus (Rovereto, 1898) †
Species Aequipecten oligoflabellatus Sacco, 1897 † accepted as Chlamys oligoflabellata (Sacco, 1897) †
Species Aequipecten opercularis (Linnaeus, 1758)
Species Aequipecten pallium (Linnaeus, 1758) accepted as Gloripallium pallium (Linnaeus, 1758)
Species Aequipecten palmeri (Dall, 1897) accepted as Leptopecten palmeri (Dall, 1897)
Species Aequipecten panamensis Repman, 1963 † accepted as Camptochlamys panamensis (Repman, 1963) †
Species Aequipecten paranensis (A. d'Orbigny, 1839) †
Species Aequipecten parvicostatus (Bellardi, 1852) † accepted as Chlamys parvicostata (Bellardi, 1852) †
Species Aequipecten pavonaceus (Fontannes, 1878) †
Species Aequipecten paytensis (Grzybowski, 1899) † accepted as Pecten paytensis Grzybowski, 1899 †
Species Aequipecten perplanus (S. G. Morton, 1833) † accepted as Pecten perplanus S. G. Morton, 1833 †
Species Aequipecten phrygium (Dall, 1886) accepted as Cryptopecten phrygium (Dall, 1886)
Species Aequipecten plurinominis (Pilsbry & C. W. Johnson, 1917) † accepted as Lindapecten plurinominis (Pilsbry & C. W. Johnson, 1917) †
Species Aequipecten porrectus (Glazunova, 1960) †
Species Aequipecten praesarmenticius (Glazunova, 1960) †
Species Aequipecten praescabriusculus (Fontannes, 1878) †
Species Aequipecten praetrigonostoma (Zhizhchenko, 1936) †
Species Aequipecten priscus (Schlotheim, 1820) † accepted as Pseudopecten priscus (Schlotheim, 1820) †
Subspecies Aequipecten priscus borealis Milova, 1976 † accepted as Pseudopecten priscus borealis (Milova, 1976) †
Species Aequipecten probsti (Mayer-Eymar, 1876) †
Species Aequipecten pseudangelonii (Eames & L. R. Cox, 1956) †
Species Aequipecten pseudolabadyei (Eames & L. R. Cox, 1956) †
Species Aequipecten pseudopulchellus (Glazunova, 1960) †
Species Aequipecten pseudotjaringinensis (Eames & L. R. Cox, 1956) †
Species Aequipecten qishmensis (Eames & L. R. Cox, 1956) †
Species Aequipecten quirosensis (G. D. Harris, 1927) †
Species Aequipecten radians (Nyst & Westendorp, 1839) †
Species Aequipecten raouli (Dollfus, 1889) †
Species Aequipecten raulini (Cossmann & Peyrot, 1914) †
Species Aequipecten redwoodensis (Dockery, 1982) †
Species Aequipecten revellei Durham, 1950 † accepted as Argopecten revellei (Durham, 1950) †
Species Aequipecten scabrellus (Lamarck, 1819) † accepted as Perapecten scabrellus (Lamarck, 1819) †
Species Aequipecten scabriusculus (Matheron, 1843) †
Species Aequipecten seniensis (Lamarck, 1819) † accepted as Perapecten scabrellus (Lamarck, 1819) †
Species Aequipecten shahinensis (Eames & L. R. Cox, 1956) †
Species Aequipecten spinosovatus Sacco, 1897 †
Species Aequipecten staeschei Polubotko, 1968 † accepted as Kolymonectes staeschei (Polubotko, 1968) †
Species Aequipecten subbilliemensis (Kiparisova, 1972) †
Species Aequipecten subdiscors (d'Archiac, 1846) †
Species Aequipecten sublaevigatus (Nyst, 1845) †
Species Aequipecten submalvinae (Blanckenhorn, 1901) †
Species Aequipecten suwaneensis (Dall, 1898) † accepted as Chlamys suwaneensis (Dall, 1898) †
Species Aequipecten sverdrupi Durham, 1950 † accepted as Argopecten sverdrupi (Durham, 1950) †
Species Aequipecten tehuelchus (A. d'Orbigny, 1846)
Species Aequipecten telegdirothi (Csepreghy-Meznerics, 1960) † accepted as Costellamussiopecten telegdirothi (Csepreghy-Meznerics, 1960) †
Species Aequipecten terekhovi Polubotko, 1968 † accepted as Kolymonectes terekhovi (Polubotko, 1968) †
Species Aequipecten terrisi (Eames & L. R. Cox, 1956) †
Species Aequipecten touila (Demarcq, 1988) † accepted as Chlamys touila Demarcq, 1988 †
Species Aequipecten toyorensis Hayami, 1959 † accepted as Pseudopecten toyorensis (Hayami, 1959) †
Species Aequipecten transversus (Ugolini, 1903) †
Species Aequipecten tripartitus Joksimowitsch, 1911 † accepted as Aequipecten scabrellus (Lamarck, 1819) †
Species Aequipecten tucilla (Olssen, 1932) †
Species Aequipecten tumbatuensis (Eames & L. R. Cox, 1956) †
Species Aequipecten turgidus (Glazunova, 1960) †
Species Aequipecten ussuricus (Bittner, 1899) † accepted as Scythentolium ussuricum (Bittner, 1899) †
Species Aequipecten varnensis (Toula, 1892) †
Species Aequipecten vasconiensis (Cossmann & Peyrot, 1914) †
Species Aequipecten vesiculosus (Dunker, 1877) accepted as Cryptopecten vesiculosus (Dunker, 1877)
Species Aequipecten vulgaris Kimura, 1951 †
Species Aequipecten wagenaari Marquet & Dijkstra, 2000 †
Species Aequipecten walleri (Glibert, 1976) †
Species Aequipecten warmani (Eames & L. R. Cox, 1956) †
Species Aequipecten waynensis (Mansfield, 1940) †
Species Aequipecten yanagawaensis (Nomura & Zinbô, 1936) † accepted as Cryptopecten yanagawaensis (Nomura & Zinbô, 1936) †
Species Aequipecten zenonis (Reed, 1935) †
Species Aequipecten zitteli (T. Fuchs, 1883) †
Genus Argopecten Monterosato, 1889 (49)
Genus Carolinapecten Ward & Blackwelder, 1987 † (6)
Genus Chagrepecten T. R. Waller, 2011 † (3)
Genus Chesapecten Ward & Blackwelder, 1975 † (15)
Genus Cryptopecten Dall, Bartsch & Rehder, 1938 (10)
Genus Flexopecten Sacco, 1897 (12)
Genus Gurabopecten T. R. Waller, 2011 † (1)
Genus Haumea Dall, Bartsch & Rehder, 1938 (3)
Genus Iemanjavola Santelli, Del Río, Távora & M. I. F. Ramos, 2024 † (1)
Genus Leptopecten A. E. Verrill, 1897 (33)
Genus Lindapecten Petuch, 1995 (13)
Genus Lissopecten Verrill, 1897 accepted as Flexopecten Sacco, 1897
Genus Paraleptopecten T. R. Waller, 2011 accepted as Leptopecten A. E. Verrill, 1897
Genus Perapecten H. P. Wagner, 1985 (4)
Genus Serratovola T. Habe, 1951 (4)
Genus Volachlamys Iredale, 1939 (7)
Tribe Amusiini Ridewood, 1903 (91)
Tribe Austrochlamydini Jonkers, 2003 (4)
Tribe Decatopectinini T. R. Waller, 1986 (99)
Tribe Pectinini Rafinesque, 1815 (184)
Genus Velata Quenstedt, 1856 † (2)
Subfamily Pedinae Bronn, 1862 (548)
Subfamily Pseudopectininae Kasum-Zade, 2003 † (10)
Subfamily Radulopectininae Romanov, 1985 † accepted as Chlamydini Teppner, 1922
Subfamily Weylinae Kasum-Zade, 2003 † (12)
Genus Agerchlamys S. E. Damborenea, 1993 † (5)
Genus Agropecten [sic] accepted as Argopecten Monterosato, 1889
Genus Amussiopecten Sacco, 1897 † (18)
Genus Amussiopsis Andreeva, 1966 † accepted as Parvamussium Sacco, 1897
Genus Amussium Herrmannsen, 1846 accepted as Amusium Röding, 1798 (1)
Genus Anatipopecten Hertlein, 1936 † (2)
Genus Anradulonectites Shurygin & Lutikov, 1991 † (6)
Genus Antipecten Cossmann, 1914 † (2)
Genus Antipectenoides X.-C. Li & Grant-Mackie, 1994 † (1)
Genus Argoderma Poli, 1795 accepted as Pecten O. F. Müller, 1776
Genus Argus Poli, 1791 accepted as Pecten O. F. Müller, 1776
Genus Avichlamys Allasinaz, 1972 † (9)
Genus Batequeus Squires & Demetrion, 1990 † (2)
Genus Belchlamys Iredale, 1929 accepted as Semipallium Jousseaume, 1928
Genus Bosniopecten Kasum-Zade, 2003 † (4)
Genus Canadonectites Aberhan, 1998 † (1)
Genus Capedopecten Dijkstra & A.W. Janssen, 1988 † (1)
Genus Christinapecten Ward, 1992 † (1)
Genus Clamys [sic] accepted as Chlamys Röding, 1798
Genus Comptopallium Iredale, 1939 accepted as Decatopecten G. B. Sowerby II, 1839
Genus Corymbichlamys Iredale, 1939 accepted as Cryptopecten Dall, Bartsch & Rehder, 1938
Genus Costellamussiopecten Bongrain, Cahuzac & Freneix, 1994 † (19)
Genus Crassedoma accepted as Crassadoma F. R. Bernard, 1986
Genus Crassodoma accepted as Crassadoma F. R. Bernard, 1986
Genus Crenamussium C. R. Newton, 1987 † (1)
Genus Cristatopecten Bongrain & Cahuzac, 2004 † accepted as Costellamussiopecten Bongrain, Cahuzac & Freneix, 1994 †
Genus Decadopecten [sic] accepted as Decatopecten G. B. Sowerby II, 1839
Genus Dendopecten Hertlein, 1936 † accepted as Mesopeplum Iredale, 1929
Genus Deperetia Teppner, 1922 accepted as Pecten O. F. Müller, 1776
Genus Dhondtichlamys T. R. Waller, 2001 † (14)
Genus Dimarzipecten Ward, 1992 † (3)
Genus Eopecten Douvillé, 1897 † (11)
Genus Euthymipecten Dhondt & Dieni, 1988 † (2)
Genus Exellichlamys [sic] accepted as Excellichlamys Iredale, 1939
Genus Flabellipecten Sacco, 1897 accepted as Pecten O. F. Müller, 1776
Genus Giraliapecten Darragh & Kendrick, 1991 † (1)
Genus Glabropecten Sacco, 1897 accepted as Flexopecten Sacco, 1897
Genus Gloriapallium [sic] accepted as Gloripallium Iredale, 1939
Genus Grandinectes Fürsich & H.-Z. Pan, 2014 † accepted as Camptonectes (Grandinectes) Fürsich & H.-Z. Pan, 2014 †
Genus Grandipecten Cossmann, 1914 † accepted as Gigantopecten Rovereto, 1899 †
Genus Granulochlamys Allasinaz, 1972 † (6)
Genus Heritschia Teppner, 1922 accepted as Pecten O. F. Müller, 1776
Genus Hilberia Teppner, 1922 † (10)
Genus Hinnita accepted as Hinnites Defrance, 1821
Genus Hunanonectes Z.-J. Fang, 1978 † (1)
Genus Inaequipecten Ugolini, 1906 † accepted as Gigantopecten Rovereto, 1899 †
Genus Indigiropecten Trushchelev, 1984 † accepted as Tosapecten (Indigiropecten) Trushchelev, 1984 †
Genus Indopecten Douglas, 1929 † (17)
Genus Indoweyla Fürsich & Heinze, 1995 † (3)
Genus Interchlamys T. R. Waller, 2011 † (5)
Genus Iranopecten Repin, 2001 † accepted as Indopecten Douglas, 1929 †
Genus Janira Schumacher, 1817 accepted as Pecten O. F. Müller, 1776
Genus Janopecten Arkhipov & Trushchelev, 1980 † (9)
Genus Jaworskia Teppner, 1922 accepted as Pecten O. F. Müller, 1776
Genus Jorgechlamys del Río, 2004 † (2)
Genus Kenkerenochlamys Bychkov, 2007 † (1)
Genus Kolymonectes Milova & Polubotko, 1976 † (7)
Genus Korobkovia Glibert & van de Poel, 1965 † (3)
Genus Lepidopecten Woodring, 1982 † (2)
Genus Lituyapecten MacNeil, 1961 † (7)
Genus Loxochlamys T. R. Waller, 2005 † (3)
Genus Lyriochlamys Sobetski, 1977 † (10)
Genus Macrochlamis Sacco, 1897 † accepted as Macrochlamys Sacco, 1897 †
Genus Macrochlamys Sacco, 1897 † accepted as Gigantopecten Rovereto, 1899 †
Genus Microchlamys Sobetski, 1977 † accepted as Dhondtichlamys T. R. Waller, 2001 †
Genus Micronectes Ichikawa & Maeda, 1958 † (1)
Genus Minervapecten Romanov, 1985 † (2)
Genus Mixtipecten Marwick, 1928 † (1)
Genus Nanaochlamys Hatai & Masuda, 1953 † (4)
Genus Neithella Hayami, 1965 † (2)
Genus Nippononectes Tashiro, 1982 † (4)
Genus Nomurachlamys Kurihara & Matsubara, 2010 † accepted as Chlamys (Nomurachlamys) Kurihara & Matsubara, 2010 †
Genus Notovola Finlay, 1926 accepted as Pecten O. F. Müller, 1776
Genus Ochotochlamys Milova & Polubotko, 1976 † (9)
Genus Pacipecten Olsson, 1961 accepted as Leptopecten A. E. Verrill, 1897
Genus Palliorum [sic] accepted as Palliolum Monterosato, 1884
Genus Pallium Schröter, 1802 accepted as Pecten O. F. Müller, 1776
Genus Pamiropecten Romanov, 1985 † (10)
Genus Parapecten Crickmay, 1930 † accepted as Weyla J. Böhm, 1920 †
Genus Parvochlamys Sacco, 1904 † (1)
Genus Pectinites Schlotheim, 1813 † accepted as Pecten O. F. Müller, 1776
Genus Pectinium Link, 1807 accepted as Pecten O. F. Müller, 1776
Genus Pectinula A. F. Leanza, 1943 † accepted as Posidonotis Losacco, 1942 †
Genus Peduminae T. Habe, 1977 accepted as Pedinae Bronn, 1862
Genus Peplum Bucquoy, Dautzenberg & Dollfus, 1889 accepted as Pseudamussium Mörch, 1853
Genus Periclaraia J.-H. Li & B.-L. Ding, 1981 † (2)
Genus Pernipecten Girty, 1904 † accepted as Pernopecten Winchell, 1865 †
Genus Pethopecten Hertlein, 1936 † (1)
Genus Phallium [sic] accepted as Pallium Schröter, 1802
Genus Philippia Teppner, 1922 accepted as Pecten O. F. Müller, 1776
Genus Plagioctenium Dall, 1898 accepted as Argopecten Monterosato, 1889
Genus Platipecten Monterosato, 1899 accepted as Pseudamussium Mörch, 1853
Genus Pleuronectia Swainson, 1840 accepted as Amusium Röding, 1798
Genus Prohinnites Gillet, 1922 † (8)
Genus Protamusium A. E. Verrill, 1897 † accepted as Entolium Meek, 1865 †
Genus Proteopecten Monterosato, 1899 accepted as Flexopecten Sacco, 1897
Genus Pseudamusium [sic] accepted as Pseudamussium Mörch, 1853
Genus Psychrochlamys Jonkers, 2003 accepted as Zygochlamys Ihering, 1907
Genus Radiopecten Stephenson, 1941 † (2)
Genus Rebeccapecten Ward, 1992 † (2)
Genus Reticulochlamys del Río, 2004 † (3)
Genus Semipecten P. Fischer, 1886 accepted as Hemipecten A. Adams & Reeve, 1849
Genus Sigmaringenopecten Kasum-Zade, 2003 † (1)
Genus Sinectenolium Eames & L. R. Cox, 1956 † accepted as Decatopecten (Sinectenolium) Eames & L. R. Cox, 1956 †
Genus Somalipecten T. R. Waller, 1986 accepted as Mirapecten Dall, Bartsch & Rehder, 1938
Genus Stralopecten Tucker-Rowland, 1938 † (3)
Genus Striatoamussium Aberhan, 1998 † accepted as Propeamussium (Striatoamussium) Aberhan, 1998 †
Genus Tuguronectes Sey, 1992 † (1)
Genus Varientolium Andreeva, 1966 † (1)
Genus Velatopecten [sic] † accepted as Velopecten E. Philippi, 1899 †
Genus Velopecten E. Philippi, 1899 † accepted as Velata Quenstedt, 1856 †
Genus Venilia A. Adams & Reeve, 1848 accepted as Hemipecten A. Adams & Reeve, 1849
Genus Vertipecten U. S. Grant & Gale, 1931 † (12)
Genus Vola Mörch, 1853 accepted as Pecten O. F. Müller, 1776 (1)
Genus Zamorapecten T. R. Waller, 2011 † (2)
Family Pectinoidea incertae sedis (2)
Family Pleuronectitidae Hautmann, 2011 † (13)
Family Propeamussidae [sic] accepted as Propeamussiidae Abbott, 1954
Family Propeamussiidae Abbott, 1954 (256)
Family Spondylidae J. E. Gray, 1826 (209)
Family Spondylopectinidae Kasum-Zade & Romanov, 1987 † accepted as Spondylidae J. E. Gray, 1826
Family Syncyclonematidae T. R. Waller, 1978 accepted as Entoliidae Teppner, 1922
Family Tosapectinidae Trushchelev, 1984 † (11)
Superfamily Plicatuloidea Gray, 1854 (57)
Superfamily Prospondyloidea Pchelintseva, 1960 † (13)
Superfamily Pseudomonotoidea Newell, 1938 † (2)
Superfamily Pterinopectinoidea Newell, 1938 † (72)
Family Pernopectinoidea Newell, 1938 accepted as Entolioidea Teppner, 1922 †
Family Saharopteriidae G. Termier & H. Termier, 1972 †
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 (1 379)
Infraclass Cryptodonta † (342)
Class Caudofoveata (143)
Class Cephalopoda (1 921)
Class Conchifera accepted as Bivalvia
Class Cricoconarida † (1)
Class Gastropoda (103 047)
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