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| Kingdom Animalia |
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Thyasira Lamarck, 1818 – valid
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Thyasira alleni Carrozza, 1981 – valid
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Thyasira barbarensis (Dall, 1890) – valid – santa barbara cleftclam
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Thyasira bisecta Conrad, 1849 – invalid
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Thyasira brevis A. E. Verrill and Bush, 1898 – valid – short cleftclam
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Thyasira croulinensis Jeffreys, 1874 – valid
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Thyasira cycladia S. Wood, 1853 – valid
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Thyasira cygnus Dall, 1916 – valid – swan cleftclam
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Thyasira disjuncta (Gabb, 1866) – invalid
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Thyasira elliptica Verrill and Bush, 1898 – valid
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Thyasira equalis (A. E. Verrill and Bush, 1898) – valid – equal cleftclam
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Thyasira equalis alba Verrill and Bush, 1898 – valid
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Thyasira equalis equalis A. E. Verrill and Bush, 1898 – valid
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Thyasira eumyaria M. Sars, 1870 – valid – mya cleftclam
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Thyasira ferruginea Winckworth, 1932 – invalid – reddish cleftclam
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Thyasira ferruginosa Forbes, 1844 – invalid
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Thyasira flexuosa (Montagu, 1803) – valid – flexuose cleftclam
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Thyasira flexuosa flexuosa (Montagu, 1803) – valid
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Thyasira flexuosa gouldii (Philippi, 1845) – invalid
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Thyasira flexuosa sarsii Philippi, 1845 – valid
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Thyasira gouldii (Philippi, 1845) – valid – gould cleftclam
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Thyasira grandis Verrill and Smith, 1885 – valid
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Thyasira granulosa di Monterosato, 1874 – valid – granulose cleftclam
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Thyasira inaequalis (Verrill and Bush, 1898) – invalid
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Thyasira incrassatus (Jeffreys, 1876) – valid
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Thyasira inequalis (Verrill and Bush, 1898) – invalid
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Thyasira insignis (Verrill and Bush, 1898) – invalid
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Thyasira obesa Verrill – invalid
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Thyasira obsoleta (Verrill and Bush, 1898) – valid
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Thyasira ovoidea Dall, 1889 – valid
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Thyasira plana (Verrill and Bush, 1898) – invalid
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Thyasira plicata Verrill and Smith, 1885 – valid
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Thyasira polygona Jeffreys, 1863 – invalid
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Thyasira pygmaea Verrill and Bush, 1898 – valid
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Thyasira pyriformis Dall, 1886 – invalid
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Thyasira rotunda Jeffreys, 1881 – valid – rotund cleftclam
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Thyasira simplex A. E. Verrill and Bush, 1898 – valid – simple cleftclam
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Thyasira subovata Jeffreys, 1881 – valid
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Thyasira subtrigona (Jeffreys, 1858) – valid
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Thyasira succisa (Jeffreys, 1876) – valid – cut-off cleftclam
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Thyasira tortuosa Jeffreys, 1881 – valid
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Thyasira tricarinata Dall, 1916 – valid
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Thyasira triseriata – valid
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Thyasira trisinuata (d'Orbigny, 1842) – valid – atlantic cleftcla, Atlantic cleftclam |
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| Kingdom Bacteria |
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Thiomicrospira thyasirae (Wood and Kelly, 1995) Wood and Kelly, 1995 – valid |
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