Dosinia concentrica (Born, 1778) is yet another member of the diverse venus clam family, the Veneridae. Its shell reaches 70 mm (about 2.75 inches) and its characterized by a circular shape, glossy surface, and about 8–10 commarginal ridges per centimeter (or 20–24 per inch). The color is pure white. Do not confuse with the also locally present Disk Dosinia, Dosinia discus, which has much narrower ridges that are twice as numerous.
The Elegant Dosinia, Dosinia concentrica, from Sanibel. Photos by José H. Leal.
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