Carditamera affinis is a species of marine bivalve mollusc. It was first described to science by George Brettingham Sowerby I in 1833. No English common name has been recorded for this species. The first appearance of this animal in the fossil record is 5.333 million years ago.
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Cyclocardia borealis, or the northern cardita, is a species of bivalve mollusc in the family Carditidae. It can be found along the Atlantic coast of North America, ranging from the Arctic Ocean to Cape Hatteras.
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Cardita distorta, or the dog's foot cockle, is a bivalve mollusc of the family Carditidae, endemic to New Zealand including the Chatham Islands and southern offshore islands. It is found from low tide to depths of approximately 185 m.
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