Classification of Woodring 1973
Subg. †Ennucula (Lissanucula) Woodring 1973
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†Ennucula (Lissanucula) hilli Woodring 1925
Invalid names: Nucula (Nuculopsis) Woodring 1925 [replaced]
G. Acar Gray 1857 [miniature ark]
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G. Anadara Gray 1847 [ark]
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Subg. Anadara (Hawaiarca) Dall et al. 1938
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†Anadara (Hawaiarca) cibaoica Maury 1917
†Anadara (Hawaiarca) donacia Dall 1898
†Anadara (Hawaiarca) guajatica Sheldon and Maury 1920
Anadara (Hawaiarca) rectangula Dall et al. 1938
Subg. †Anadara (Rasia) Gray 1857
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†Anadara (Rasia) athroa Woodring 1973
†Anadara (Rasia) carmenensis Clark and Durham 1946
Anadara (Rasia) concinna Sowerby 1833
†Anadara (Rasia) dariensis Brown and Pilsbry 1911
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†Anadara (Rasia) dariensis progonica Woodring 1973
Invalid names: Arca gatunensis Toula 1911 [synonym], Scapharca losquemadica Maury 1917 [synonym]
Anadara (Rasia) emarginata Sowerby 1833
†Anadara (Rasia) fissicosta Spieker 1922
Anadara (Rasia) formosa Sowerby 1833
†Anadara (Rasia) inaequilateralis Guppy 1866
†Anadara (Rasia) lita Woodring 1973
†Anadara (Rasia) medioamericana Olsson 1922
†Anadara (Rasia) sechurana Olsson 1932
Fm. Arcidae Lamarck 1809
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G. Arca Linnaeus 1758 [ark]
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G. Calloarca Gray 1857
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Subg. †Calloarca (Taeniarca) Olsson 1965
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Calloarca (Taeniarca) alternata Sowerby 1833
†Calloarca (Taeniarca) leonensis Mansfield 1932
†Calloarca (Taeniarca) phalacra Dall 1890
†Calloarca (Taeniarca) taeniata Dall 1898
Fm. Neritidae Rafinesque 1815
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Subfm. Neritinae Rafinesque 1815
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G. Nerita Linnaeus 1758
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†Nerita granulosa Deshayes 1824
†Nerita hadra Woodring 1973
†Nerita listrota Woodring 1973
†Nerita planospira Anton 1839
Fm. Nuculanidae Adams and Adams 1858 [pointed nut clam]
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G. Jupiteria Bellardi 1875
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†Jupiteria aipeia Woodring 1973
†Jupiteria solida Dall 1886
†Jupiteria subtumida Woodring 1925
G. Portlandia Mörch 1857
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Subg. †Portlandia (Portlandella) Stewart 1930
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†Portlandia (Portlandella) euthynta Woodring 1973
†Portlandia (Portlandella) rosa Hanna 1927
G. Saccella Woodring 1925
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Saccella acapulcensis Pilsbry and Lowe 1932
†Saccella acuminata von Buch 1845
Saccella acuta Conrad 1832 [pointed nut clam]
†Saccella balboae Brown and Pilsbry 1911
†Saccella canonica Dall 1890
†Saccella davidana Olsson 1942
†Saccella fabalis Olsson 1964
†Saccella incognita Guppy 1867
Saccella ornata d'Orbigny 1845
†Saccella packardi Forbes 1848
†Saccella peruviana Dall 1895
†Saccella phlyctaena Woodring 1973
†Saccella subcerata Woodring 1925
Fm. Nuculidae Gray 1824 [nut clam]
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G. Acila Adams and Adams 1858 [divaricate nutclam]
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Subg. Acila (Acila) Adams and Adams 1858
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G. Nucula Lamarck 1799
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Subg. Nucula (Nucula) Lamarck 1799
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†Nucula (Nucula) cahuitensis Olsson 1922
Nucula (Nucula) exigua Sowerby 1833
Nucula (Nucula) schencki Hertlein and Strong 1940
†Nucula (Nucula) sphenopsis Conrad 1865
†Nucula (Nucula) tenuisculpta Gabb 1873
Fm. Pseudomelaniidae Cossmann 1909
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Fm. Vitrinellidae Bush 1897
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G. Teinostoma Adams and Adams 1853
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Subg. †Teinostoma (Idioraphe) Pilsbry 1922
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†Teinostoma (Idioraphe) elachistrum Woodring 1973
†Teinostoma (Idioraphe) prenanum Wade 1926
†Teinostoma (Idioraphe) verilli Meyer 1886
Subg. Anadara (Grandiarca) Olsson 1961
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†Anadara (Grandiarca) chiriquiensis Gabb 1861
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†Anadara (Grandiarca) chiriquiensis anguillana Cooke 1919
Invalid names: Arca (Anadara) nelsoni Spieker 1922 [synonym], Arca (Anadara) toroensis Spieker 1922 [synonym], Arca (Scapharca) crescens Spieker 1922 [synonym], Arca (Scapharca) imporcata Spieker 1922 [synonym], Arca obesiformis Grzybowski 1899 [synonym], Arca septifera Grzybowski 1899 [synonym], Arca websteri Pilsbry 1910 [synonym]
†Anadara (Grandiarca) garitensis Olsson 1932
Subg. Barbatia (Barbatia) Gray 1842
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Barbatia (Barbatia) cancellaria Lamarck 1819
Subg. Glycymeris (Tucetona) Iredale 1939
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Glycymeris (Tucetona) pectinata Gmelin 1791
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†Glycymeris (Tucetona) pectinata canalis Brown and Pilsbry 1911