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This is fossil or subfossil, dating from when what is now the ocean beach was back then still just a back bay.
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Another sub fossil or fossil valve.
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Another sub fossil or fossil valve.
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Could this be a blood arc?
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Could this be a blood arc?
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Relatively common at this location, more so than the transverse ark.
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Relatively common at this location, more so than the transverse ark.
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