 Curved lines, in feet, legs, arms, crest rails, and pediments, along with restrained ornament (often in a shell shape) emphasizing the material, are characteristic of Queen Anne style.In contrast to William and Mary furniture, which was marked by rectilinearity (straight lines) and use of curves for decoration, Queen Anne furniture uses C-scroll, S-scrolls, and ogee (S-curve) shapes in the structure of the furniture itself.In sophisticated urban environments, walnut was a frequent choice for furniture in the Queen Anne style, superseding the previously dominant oak and leading to the era being called "the age of walnut."