Donax dentifer Hanley, 1843 - Ecuador, 29-35mm; Appropriately named. Note the interlocking dentition along the valve margins.
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Donax faba (Gmelin, 1791) - Australia, 20-21mm; extremely varied colors and patterns; most common of the tropical Indo-Pacific Donax.
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Donax hanleyanus (Philippi, 1842) - Argentina, 26-34mm; lives intertidally in sand; found as far north as Espirito Santo State, Brazil.
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