Shell triangularly oblong, gibbous. Umbos posterior, elevated and pointed. Anterior margin convex; posterior margin convex with a depressed notch; anterior-dorsal margin straight and gradually sloped with a sharp canal at the side; posterior-dorsal margin slightly concave; posterior margin short and pointed. Sculpture with prominent concentric striae, lamellae-like on the anterior end, thinner on the posterior, more or less squamately spinose on the angle. Radial striae prominent and originated from umbos in divergent manner. Ligament short, dark brown color. Lunule very prominent, wide and equal on both the valves.
In the left valve the cardinal complex consists of a thick anterior tooth and a thin laminated posterior tooth; lateral well developed; posterior lateral stronger than anterior and more prominent than the cardinal complex. In the right valve the cardinal complex consists of a nob-like bifid cardinal tooth; laterals poorly developed and form a groove to accommodate the lateral teeth of the left valve to form ball and socket joint.
Adductor muscle scars poorly developed. Anterior adductor scar elongated, semilunar shaped and posterior adductor almost rectangular shaped. Sinus equal on both valves, sinus rises from base of a posterior adductor scar straight and extends upto the half of the shell, with rounded anterior end and falls obliquely to the pallial line and in confluence with it.