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JM Butler: Rana sphenocephala
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JM Butler: Rana clamitans
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JM Butler: Rana sphenocephala
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JM Butler: Rana clamitans
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JM Butler: Rana clamitans
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JM Butler: Rana sphenocephala
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JM Butler: Rana sphenocephala
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JM Butler: Rana clamitans
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JM Butler: Rana clamitans
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JM Butler: Rana sylvatica
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JM Butler: Rana sylvatica
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JM Butler: Rana clamitans
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JM Butler: Rana sylvatica eggmass
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JM Butler: Rana palustris
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JM Butler: Rana catesbiena
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JM Butler: Rana clamitans
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JM Butler: Ambystoma opacum and Rana clamitans
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JM Butler: Rana clamitans
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JM Butler: Rana clamitans
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JM Butler: Rana clamitans
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JM Butler: Rana catesbienna
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JM Butler: Rana palustris
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JM Butler: Rana catesbienna
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JM Butler: Rana clamitans
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JM Butler: Rana palustris
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JM Butler: Rana sylvatica
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JM Butler: Rana clamitans
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JM Butler: Rana cf. palustris
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JM Butler: Rana palustris
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JM Butler: Rana catesbiena