Shell is thin, fragile or brittle, oblong to oval; dorsal wing on young, often eroding with age. Umbo is flattened and barely above hinge line. Epidermis is light yellowish-tan to dirty yellow-brown in adults; faint, narrow green rays may cover shell. Inside shell beak cavity is shallow; pseudocardinal teeth small, thin and reduced; lateral teeth smooth, moderate length, very thin, blade-like and high; nacre (lining) bluish-white, iridescent throughout and may be pinkish dorsally.
Similar species: Pink papershells have darker epidermis and purple to purplish-bronze nacre.