The Delicate Ark
The Delicate Ark, Fugleria tenera (C.B. Adams, 1845), is an uncommon western Atlantic member of the Arcidae, a family of marine bivalves that also includes the Turkey Wing and the Transverse Ark, among others. The delicate Ark may reach slightly more than one inch (25 mm) in size. It differs from others, related species by its thin shell, with an alternating pattern of thicker and thinner radial ribs, which are in turn crossed by concentric ridges. Living delicate Arks have a