Shell thin, flattened, trigonal-ovate in shape; outer shell surface variable in colour -usually white, cream, tan or pale-grey with varying dark markings, covered with concentric ridges; inner shell surface smooth, white with brown or purple blotches; umbones and beak slightly anterior; hinge plate high and short with 3 pairs of cardinal teeth in each valve; pallial sinus shallow.

Burrowing in sand or gravel in benthic, intertidal or subtidal zones of coastal waters. Can be found at depths of 10-22m below water surface.

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