Shell is solid, thick, noticeably flattened and triangular with a prominent and sharply angled posterior ridge. Umbo is flattened on the sides, directed forward and slightly raised above hinge line. Epidermis is yellowish-brown with interrupted but distinct brown rays that appear as spots, bars, wavy patterns or V-shapes (chevrons). Inside shell beak cavity is shallow; pseudocardinal teeth large, grooved and triangular; lateral teeth serrate, short and straight; nacre (lining) white.
Similar species: Deertoe has a similar color pattern, but the shell is much more inflated and has a deeper beak cavity.