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"About 1"" across. Interesting article from about a year ago: http://www.sfgate.com/science/article/2-million-oysters-in-bay-begin-restoration-effort-4984300.php"
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"About 1"" across. Interesting article from about a year ago: http://www.sfgate.com/science/article/2-million-oysters-in-bay-begin-restoration-effort-4984300.php"
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Please correct if misidentified.
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Please correct if misidentified.
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Covered in other stuff!
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"AKA Hawaiian Oyster, About 3/4"" long, on side of reef rock in shallow old fishpond."
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Massive fossil oyster, originally identified for me by Cawthron in the 1960's. Name has possibly now become obselete. Shell thickness of over 20mm may have developed as protection against predators with powerful jaws. Being laminated in layers making it incredibly resistant to attack. The clearly visible hinge is quite worn suggesting the shell may have suffered 'beach wear' before becoming cemented into the substrate.
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"AKA Hawaiian Oyster, About 3/4"" long, on side of reef rock in shallow old fishpond."
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Massive fossil oyster, originally identified for me by Cawthron in the 1960's. Name has possibly now become obselete. Shell thickness of over 20mm may have developed as protection against predators with powerful jaws. Being laminated in layers making it incredibly resistant to attack. The clearly visible hinge is quite worn suggesting the shell may have suffered 'beach wear' before becoming cemented into the substrate.
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Massive fossil oyster, originally identified for me by Cawthron in the 1960's. Name has possibly now become obselete. Shell thickness of over 20mm may have developed as protection against predators with powerful jaws. Being laminated in layers making it incredibly resistant to attack. The clearly visible hinge is quite worn suggesting the shell may have suffered 'beach wear' before becoming cemented into the substrate.
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Massive fossil oyster, originally identified for me by Cawthron in the 1960's. Name has possibly now become obselete. Shell thickness of over 20mm may have developed as protection against predators with powerful jaws. Being laminated in layers making it incredibly resistant to attack. The clearly visible hinge is quite worn suggesting the shell may have suffered 'beach wear' before becoming cemented into the substrate.
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Massive fossil oyster, originally identified for me by Cawthron in the 1960's. Name has possibly now become obselete. Shell thickness of over 20mm may have developed as protection against predators with powerful jaws. Being laminated in layers making it incredibly resistant to attack. The clearly visible hinge is quite worn suggesting the shell may have suffered 'beach wear' before becoming cemented into the substrate.
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NZ flat oyster Upper shell. And cockle.
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NZ flat oyster Upper shell. And cockle.
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Shells on Purau beach.
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Shells on Purau beach.