Benthic; depth range 1 - 151 m (Ref. 101602)
Climate / Range
Tropical; 35°N - 29°S, 98°W - 34°W
Shell circular, inequivalve, lower valve strongly concave, upper valve flatter, slightly convex. Hinge with wing-like projections of equal size. Sculpture on upper (flat) valve of about 35 ribs and interspaces of about same width. Lower (deep) valve with about 20 less prominent ribs. Colour: tan to light brown. Inner surface of lower valve white. Upper valve mottled with reddish brown and dark brown markings.
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Estimation of some characteristics with mathematical models