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"A close examination of a few of these specimens (with a hand lens) indicated that they have very fine concentric ""threads"" between the ribs, clinching the ID. These were the only numerous shell at the end of the road at Boca Chica Blvd."
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Canaveral Nat'l Seashore
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US
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Cameron County, Texas, US