| Bivalvia Linnaeus, 1758 (Class) |
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| Pholadomyoidea (Order) |
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| Clavagellidae d'Orbigny, 1843 (Family) |
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| Cleidothaeridae Hedley, 1918 (Family) |
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| Cuspidariidae Dall, 1886 (Family) |
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| Laternulidae Hedley, 1918 (Family) |
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| Lyonsiidae Fischer, 1887 (Family) |
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| Myochamidae Bronn, 1862 (Family) |
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| Pandoridae Rafinesque, 1815 (Family) |
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| Periplomatidae Dall, 1895 (Family) |
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| Pholadomyidae Gray, 1847 (Family) |
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| Poromyidae Dall, 1886 (Family) |
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| Thraciidae Stoliczka, 1870 (Family) |
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| Verticordiidae Stoliczka, 1871 (Family) |
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