Classification of Hendy 2020
G. Lottia Gray 1833
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Lottia insessa Hinds 1842
Lottia limatula Carpenter 1864
Lottia scabra Gould 1846
G. Patelloida Quoy 1834
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†Patelloida tejonensis Gabb 1869
†Patelloida triquetrus Lindberg and Squires 1990
†Patelloida vokesi Hickman 1980
G. Bathybembix Crosse 1892
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†Bathybembix arnoldi Durham 1944
†Bathybembix columbiana Dall 1909
†Bathybembix hickmanae Moore 1984
†Bathybembix nitor Hickman 1980
†Bathybembix santacruzensis Arnold 1908
†Bathybembix turbonata Clark 1932
†Bathybembix washingtoniana Dall 1909
G. Cryptonatica Dall 1892
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†Cryptonatica oregonensis Conrad 1865
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Invalid names: Ampullina (Amauropsis) oregonensis Dall 1909 [synonym]
G. Echinophoria Sacco 1890
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†Echinophoria dalli Dickerson 1917
†Echinophoria fax Tegland 1931
G. Galeodea Link 1807
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†Galeodea californica Clark 1942
†Galeodea crescentensis Weaver and Palmer 1922
†Galeodea louella Squires and Advocate 1986
†Galeodea meganosensis Vokes 1939
G. †Liracassis Moore 1963
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†Liracassis apta Tegland 1931
†Liracassis durhami Kanno 1971
†Liracassis egberti Schenck 1926
†Liracassis iani Schenck 1926
†Liracassis oregonensis Dall 1909
†Liracassis petrosa Conrad 1855
†Liracassis rex Tegland 1931
G. Lirobittium Bartsch 1911
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Lirobittium calenum Dall 1919
†Lirobittium casmaliense Bartsch 1911
†Lirobittium hamlini Bartsch 1911
G. Turritella Lamarck 1799 [turret shell]
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Turritella gonostoma Valenciennes 1832
†Turritella keaseyensis Hickman 1980
†Turritella oregonensis Conrad 1849
†Turritella pittsburgensis Moore 1976
†Turritella porterensis Weaver 1912
†Turritella uvasana Conrad 1855
G. Cancellaria Lamarck 1799
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†Cancellaria arnoldi Dall 1909
†Cancellaria landesi Winkle 1918
G. Euclia Adams and Adams 1854
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†Euclia fernandoensis Arnold 1907
†Euclia rapa Nomland 1917
†Euclia tribulis Nomland 1917
G. Acila Adams and Adams 1858 [divaricate nutclam]
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Subg. Acila (Acila) Adams and Adams 1858
G. Portlandia Mörch 1857
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†Portlandia chehalisensis Arnold 1908
†Portlandia rosa Hanna 1927
G. Saccella Woodring 1925
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Saccella hindsii Hanley 1860
Saccella laeviradius Pilsbry and Lowe 1932
†Saccella orcutti Arnold 1908
†Saccella uvasana Dickerson 1915
G. Anadara Gray 1847 [ark]
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Anadara aequatorialis d'Orbigny 1846
†Anadara congesta Conrad 1856
†Anadara montereyana Osmont 1904
Anadara obesa Sowerby 1833
†Anadara osmonti Dall 1909
†Anadara santana Loel and Corey 1932
†Anadara trilineata Conrad 1856
G. Barbatia Gray 1842
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†Barbatia cowlitzensis Weaver and Palmer 1922
†Barbatia landesi Weaver and Palmer 1922
†Barbatia pseudoillota Reinhart 1937
†Barbatia suzzalloi Weaver and Palmer 1922
G. Glycymeris Da Costa 1778
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†Glycymeris grewingki Dall 1909
Glycymeris maculata Broderip 1832
†Glycymeris viticola Anderson and Hanna 1825
G. Larkinia Reinhart 1935
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Larkinia grandis Broderip and Sowerby 1829
Larkinia multicostata Sowerby 1833
G. Limopsis Sassi 1827
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†Limopsis carmanahensis Clark 1925
†Limopsis nitens Conrad 1849
G. Modiolus Lamarck 1801
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†Modiolus eugenensis Clark 1925
†Modiolus trinominata Hanna 1924
G. Chlamys Röding 1798
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†Chlamys alockamanensis Weaver 1912
†Chlamys anapleus Woodring 1946
†Chlamys behringiana Middendorff 1849
†Chlamys cornwalli Clark and Arnold 1923
†Chlamys cowlitzensis Weaver 1912
†Chlamys grunskyi Hertlein 1929
†Chlamys landesi Arnold 1906
†Chlamys sespeensis Arnold 1906
†Chlamys washburnei Arnold 1906
G. †Phygraea Vyalov 1936
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†Phygraea badgeri Squires 2018
†Phygraea pacifica Squires and Demetrion 1990
†Phygraea stewarti Hanna 1927
G. Plicatula Lamarck 1801
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†Plicatula juncalensis Squires 1987
†Plicatula lapidicina Squires and Saul 1998
†Plicatula ostreiformis Stanton 1896
†Plicatula simiensis Squires and Saul 1998
†Plicatula surensis Squires and Saul 1997
†Plicatula trailerensis Squires and Saul 1998
G. Pododesmus Philippi 1837
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G. Pteria Scopoli 1777
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†Pteria berryi Adegoke 1969
†Pteria clarki Weaver and Palmer 1922
†Pteria hertleini Wiedey 1928
†Pteria howei Nelson 1925
†Pteria jordani Wiedey 1928
Pteria mazatlanica Hanley 1855
G. Pycnodonte Fischer von Waldheim 1835
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†Pycnodonte erici Hertlein 1929
†Pycnodonte heermanni Conrad 1855
†Pycnodonte loeli Hertlein 1928
G. Chama Linnaeus 1758
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Chama pellucida Broderip 1835
Chama squamuligera Pilsbry and Lowe 1932
Subg. †Glyptoactis (Claibornicardia) Stenzel and Krause 1957
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†Glyptoactis (Claibornicardia) keenae Verástegui 1953
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Invalid names: Venericardia (Pacificor) argentea Verástegui 1953 [synonym]
†Glyptoactis (Claibornicardia) sandiegoensis Hanna 1927
G. Clinocardium Keen 1936
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Subg. Clinocardium (Clinocardium) Keen 1936
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Clinocardium (Clinocardium) coosense Dall 1909
†Clinocardium (Clinocardium) dickersoni Clark 1918
†Clinocardium (Clinocardium) meekianum Gabb 1866
†Clinocardium (Clinocardium) praeblandum Keen 1954
†Clinocardium (Clinocardium) pristinum Keen 1954
Clinocardium scapoosense Clark 1925
†Clinocardium sookensis Clark and Arnold 1923
G. Conchocele Gabb 1866
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†Conchocele bathyaulax Hickman 2015
†Conchocele taylori Hickman 2015
G. Corbicula Megerle 1811
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†Corbicula brevidens White 1889
†Corbicula cowlitzensis Weaver 1912
†Corbicula jestesi Squires 1999
†Corbicula olequahensis Weaver 1912
†Corbicula sookensis Clark and Arnold 1923
†Corbicula willisi White 1889
G. †Crassatella Lamarck 1799
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†Crassatella branneri Waring 1914
†Crassatella carmanahensis Clark 1925
†Crassatella claytonensis Dickerson 1914
†Crassatella collina Conrad 1857
†Crassatella cowlitzensis Weaver 1912
†Crassatella dalli Weaver 1916
†Crassatella lincolnensis Weaver 1916
†Crassatella meganosensis Clark and Woodford 1927
†Crassatella merriami Weaver 1916
†Crassatella perrini Dickerson 1917
†Crassatella stewartvillensis Dickerson 1914
†Crassatella stillwaterensis Weaver and Palmer 1922
†Crassatella studleyi Dickerson 1914
†Crassatella uvasana Conrad 1855
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Invalid names: Astarte semidentata Cooper 1894 [synonym], Crassatella grandis Gabb 1864 [synonym]
†Crassatella washingtoniana Weaver 1912
†Crassatella weaveri Clark 1938
G. Cyclocardia Conrad 1867
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†Cyclocardia castor Dall 1909
†Cyclocardia hannai Tegland 1933
†Cyclocardia hannibali Clark 1925
†Cyclocardia moniligena Hickman 2015
†Cyclocardia subtenta Conrad 1849
G. Dallocardia Stewart 1930
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†Dallocardia vaquerosense Arnold 1908
†Dallocardia woodringi Loel and Corey 1932
G. †Dosiniopsis Conrad 1864
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†Dosiniopsis stewartvillensis Clark and Woodford 1927
G. Gari Schumacher 1817
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Subg. Gari (Gobraeus) Brown 1844
†Gari martini Dickerson 1917
†Gari olequahensis Weaver and Palmer 1922
G. Hybolophus Stewart 1930
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†Hybolophus granti Wiedey 1928
†Hybolophus subgibbosa Hanna 1926
G. Kellia Fischer 1884
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†Kellia saxiriva Hickman 2015
†Kellia uvasana Dickerson 1915
†Kellia vokesi Hickman 2015
G. Mactromeris Conrad 1868
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†Mactromeris aequilateralis Waring 1917
†Mactromeris capayana Vokes 1939
Mactromeris catilliformis Conrad 1867
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Invalid names: Spisula mercedensis Packard 1916 [synonym]
†Mactromeris eugenensis Clark 1925
†Mactromeris hannibali Clark and Arnold 1923
†Mactromeris markleyensis Clark 1938
†Mactromeris mercedensis Packard 1916
†Mactromeris pittsburgensis Clark 1925
G. Nemocardium Meek 1876
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†Nemocardium ezoense Takeda 1953
†Nemocardium lincolnensis Weaver 1916
Subg. †Venericardia (Pacificor) Verástegui 1953
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†Venericardia (Pacificor) calafia Stewart 1930
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Invalid names: Venericardia (Pacificor) gabbi Verástegui 1953 [synonym], Venericardia (Pacificor) lutmani Turner 1938 [synonym]
†Venericardia (Pacificor) clarki Weaver and Palmer 1922
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Invalid names: Venericardia (Pacificor) weaveri Verástegui 1953 [synonym]
†Venericardia (Pacificor) merriami Dickerson 1914
G. Pitar Römer 1857
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Subg. Pitar (Pitar) Römer 1857
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†Pitar (Pitar) dalli Weaver 1916
Pitar (Pitar) helenae Olsson 1961
†Pitar stocki Weaver and Palmer 1922
†Pitar uvasana Conrad 1855
†Pitar vancouverensis Merriam 1897
G. Psammotreta Dall 1900
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Subg. Psammotreta (Leporimetis) Iredale 1930
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Psammotreta (Leporimetis) dombei Hanley 1844
†Psammotreta (Leporimetis) rostellata Clark 1918
G. Pseudocardium Gabb 1866
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†Pseudocardium landesi Weaver 1912
†Pseudocardium newcombei Clark and Arnold 1923
†Pseudocardium yaquinense Clark 1926
G. †Schedocardia Stewart 1930
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†Schedocardia brewerii Gabb 1864
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Invalid names: Cardium oldroydi Weaver and Palmer 1922 [synonym]
†Schedocardia etheringtoni Effinger 1938
†Schedocardia olequahensis Weaver 1912
G. Siliqua Mühlfeld 1811
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G. Solena Mörch 1853
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Subg. †Solena (Eosolen) Stewart 1930
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†Solena (Eosolen) eugenensis Clark 1925
†Solena (Eosolen) perrini Clark 1915
G. Tellina Linnaeus 1758
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Subg. Tellina (Moerella) Fischer 1887
Subg. Tellina (Peronidia)
G. Caryocorbula Gardner 1926
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Caryocorbula amethystina Olsson 1961
†Caryocorbula complicata Hanna 1924
†Caryocorbula cowlitzensis Dickerson 1917
†Caryocorbula domenginica Vokes 1939
†Caryocorbula hornii Gabb 1864
Caryocorbula ovulata Sowerby 1835
†Caryocorbula parilis Gabb 1864
G. Corbula Bruguière 1789
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†Corbula evansana Shumard 1858
†Corbula wardii Hanna 1927
G. Hiatella Daudin 1801
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G. Cardiomya Adams 1864
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†Cardiomya alkiensis Durham 1944
†Cardiomya comstockensis Turner 1938
†Cardiomya dolabraeformis Gabb 1864
†Cardiomya hannibali Dickerson 1914
†Cardiomya israelskya Hanna 1927
Cardiomya planetica Dall 1908
G. Periploma Schumacher 1816
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†Periploma stewartvillensis Clark and Woodford 1927
G. Thracia Blainville 1824
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Subg. Thracia (Crassithracia) Soot-Ryen 1941
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Thracia (Crassithracia) septentrionalis Jeffreys 1872
Subg. Thracia (Homoeodesma) Fischer 1887
Subg. Thracia (Odoncineta) Costa 1830
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Thracia (Odoncineta) bereniceae Coan 1990
Thracia (Odoncineta) squamosa Carpenter 1856
†Thracia gibsonensis Van Winkle 1918
Subfm. †Clathurellinae Adams and Adams 1858
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Thyasira flexuosa Montagu 1803
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Invalid names: Thyasira gouldii Philippi 1845 [synonym]
G. Dermatomya Dall 1921
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Subg. Yoldia (Kalayoldia) Grant, IV and Gale 1931
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†Yoldia (Kalayoldia) oregona Shumard 1858
Argopecten ventricosus Sowerby 1842
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Invalid names: Pecten (Plagioctenium) circularis Sowerby 1835 [synonym]
Subg. †Venericardia (Venericor) Stewart 1930
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†Venericardia (Venericor) venturensis Waring 1917
Subg. Macoma (Macoma) Leach 1819
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Macoma (Macoma) balthica Linnaeus 1758
Macoma (Macoma) middendorffi Dall 1884
Subg. Pandora (Pandorella) Conrad 1863
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†Pandora (Pandorella) vanwinkleae Tegland 1933
Subg. Yoldia (Megayoldia) Verrill and Bush 1897
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Yoldia (Megayoldia) martyria Dall 1897
Yoldia (Megayoldia) montereyensis Dall 1893
Subg. Clinocardium (Ciliatocardium) Kafanov 1974
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Clinocardium (Ciliatocardium) ciliatum Fabricius 1780
†Clinocardium (Ciliatocardium) makiyamae Kamada 1962
Clinocardium (Ciliatocardium) yakatagense Clark 1932
Cryptonatica affinis Gmelin 1791
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Invalid names: Cryptonatica aleutica Dall 1919 [synonym], Natica clausa Broderip and Sowerby 1829 [synonym], Tectonatica russa Gould 1859 [synonym]
Kellia suborbicularis Montague 1803
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Invalid names: Kellia laperousii Deshayes 1839 [synonym]
Crossata ventricosa Broderip 1833
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Invalid names: Bursa californica Hinds 1843 [synonym]
Amphidesma venusta Reeve 1853
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Invalid names: Semele incongrua Carpenter 1864 [synonym]
Glans carpenteri Lamy 1922
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Invalid names: Cardita subquadrata Conrad 1848 [synonym], Glans subquadrata Carpenter 1864 [synonym]
Clinocardium (Clinocardium) nuttallii Conrad 1837
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Invalid names: Cerastoderma corbis Martyn 1788 [synonym]
Subg. †Claibornites (Codalucina) Stewart 1930
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†Claibornites (Codalucina) turneri Stanton 1896
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Clinocardium (Keenocardium) blandum Gould 1851
Calicantharus fortis Carpenter 1866
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Invalid names: Calicantharus angulatus Arnold 1907 [synonym]
Subg. Solariella (Solariella) Wood 1842
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†Solariella (Solariella) cicca Hickman 1980
†Solariella (Solariella) crescentensis Weaver and Palmer 1922
†Solariella (Solariella) olequahensis Weaver and Palmer 1922
Solariella (Solariella) varicosa Mighels and Adams 1842
G. †Anechinocardium Hickman 2015
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†Anechinocardium formosum Hickman 1969
†Anechinocardium lorenzanum Arnold 1908
†Anechinocardium weaveri Anderson and Martin 1914
†Neobernaya spadicea Swainson 1823
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Invalid names: Cypraea fernandoensis Arnold 1907 [synonym]
Velutina velutina Müller 1776
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Invalid names: Helix laevigata Linnaeus 1758 [synonym]
G. Kalolophus Devries 2016
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†Venericardia (Pacificor) aragonia Arnold and Hannibal 1914
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Invalid names: Venericardia (Leuroactis) smileyi Vokes 1939 [synonym]
Axinopsida serricata Carpenter 1864
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Invalid names: Axinopsis viridis Dall 1901 [synonym]
†Macron aethiops Reeve 1847
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Invalid names: Pseudoliva kellettii Adams 1855 [synonym]
Cymakra gracilior Tryon 1884
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Invalid names: Mitromorpha barbarensis Arnold 1907 [synonym]
Ophiodermella cancellata Carpenter 1864
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Invalid names: Moniliopsis chacei Berry 1941 [synonym]
Microglyphis breviculus Dall 1902
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Invalid names: Actaeon (Microglyphis) schencki Berry 1941 [synonym]
Skeneopsis smithi Bartsch 1927
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Invalid names: Skenea cyclostoma Berry 1941 [synonym]
Megastraea turbanica Dall 1900
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Invalid names: Astraea (Pomaulax) petrothauma Berry 1940 [synonym]
Gadila aberrans Whiteaves 1887
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Invalid names: Cadulus fusiformis Pilsbry and Sharp 1898 [synonym]
†Venericardia (Pacificor) nelsoni Verástegui 1953
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Invalid names: Venericardia (Pacificor) transversaria Verástegui 1953 [synonym]
G. Perimangelia McLean 2000
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†Perimangelia interfossa Carpenter 1864
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Invalid names: Mangelia interlirata Stearns 1872 [synonym]
G. Paciocinebrina Houart et al. 2019
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Paciocinebrina atropurpurea Carpenter 1865
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Invalid names: Tritonalia clathrata Dall 1919 [synonym]
†Caesia californiana Conrad 1856
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Invalid names: Nassa waldorfensis Arnold 1908 [synonym]
G. Aartsenia Warén 1991
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Aartsenia satura Carpenter 1864
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Invalid names: Odostomia farallonensis Dall and Bartsch 1909 [synonym]
Calliostoma annulatum Lightfoot 1786
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Invalid names: Calliostoma virgineus Chemnitz 1789 [synonym]
Homalopoma (Homalopoma) luridum Dall 1885
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Invalid names: Leptothyra carpenteri Pilsbry 1889 [synonym]
Pseudodiala acuta Carpenter 1864
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Invalid names: Diala marmorea Carpenter 1864 [synonym]
G. Hippocampocardia Pérez and Giachetti 2020
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Hippocampocardia barbarensis Stearns 1890
Hybolophus fluctuatus Carpenter 1864
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Invalid names: Crassatellites lomitensis Oldroyd 1924 [synonym]
Vitrinella eschnaurae Bartsch 1907
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Invalid names: Teinostoma (Pseudorotella) salvania Dall 1919 [synonym], Vitrinella salvania Dall 1919 [synonym]
Lacuna (Epheria) unifasciata Carpenter 1857
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Invalid names: Amphithalmus lacunatus Carpenter 1864 [synonym]
Actonia compacta Carpenter 1864
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Invalid names: Alvania acutelirata Carpenter 1864 [synonym]
Halistylus pupoideus Carpenter 1864
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Invalid names: Halistylus subpupoideus Tryon 1887 [synonym]
Harfordia robusta Trask 1855
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Invalid names: Harfordia monksae Dall 1915 [synonym]
Calliostoma supragranosum Carpenter 1864
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Invalid names: Calliostoma splendens Carpenter 1864 [synonym]
Granulina margaritula Carpenter 1857
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Invalid names: Cypraeolina pyriformis Carpenter 1864 [synonym]
Caesia perpinguis Hinds 1844
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Invalid names: Nassa interstriata Conrad 1855 [synonym]
Minolia peramabilis Carpenter 1864
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Invalid names: Minolia rhyssa Dall 1919 [synonym]
Calliostoma canaliculatum Lightfoot 1786
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Invalid names: Trochus doliarius Chemnitz 1788 [synonym]
Iselica ovoidea Gould 1853
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Invalid names: Iselica fenestrata Carpenter 1864 [synonym]
Caecum quadratum Carpenter 1857
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Invalid names: Caecum grippi Bartsch 1920 [synonym]
Yoldia (Cnesterium) aeolica Valenciennes 1846
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Invalid names: Yoldia scissurata Dall 1897 [synonym], Yoldia seminuda Dall 1871 [synonym]
†Glyptaesopus oldroydi Arnold 1903
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Invalid names: Mangelia cetolaca Dall 1908 [objective synonym]
Gibberula subtrigona Carpenter 1864
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Invalid names: Marginella (Cystiscus) regularis Carpenter 1864 [synonym], Marginella oldroydae Jordan 1926 [synonym]
Opalia borealis Gould 1852
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Invalid names: Opalia chacei Strong 1937 [synonym], Scala wroblewskyi Mörch 1876 [synonym], Scalaria (Psychrosoma) gouldii Tapparone-Canefri 1876 [synonym]
Homalopoma radiatum Dall 1918
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Invalid names: Homalopoma fenestratum Dall 1919 [synonym], Liotia acuticostata supranodosa Strong 1934 [synonym]
Urosalpinx subangulata Stearns 1873
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Invalid names: Pteropurpura waldorfensis Arnold 1907 [synonym]
Lacuna (Epheria) carinata Gould 1848
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Invalid names: Lacuna solidula Lovén 1847 [synonym]