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Haplotrema concavum (Say, 1821)
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Haplotrema concavum (Say, 1821)
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Haplotrema concavum (Say, 1821)
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Haplotrema concavum (Say, 1821)
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Haplotrema concavum (Say, 1821)
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Mathewsoconcha belli Preston, 1913
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Mathewsoconcha belli Preston, 1913
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Mathewsoconcha belli Preston, 1913
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Mathewsoconcha belli Preston, 1913
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Micrarionta gabbi (Newcomb, 1864)
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Micrarionta gabbi (Newcomb, 1864)
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Micrarionta gabbi (Newcomb, 1864)
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Micrarionta gabbi (Newcomb, 1864)
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Micrarionta gabbi (Newcomb, 1864)
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Micrarionta gabbi (Newcomb, 1864)
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Micrarionta gabbi (Newcomb, 1864)