The integument (or skin) is a composite organ. On the surface is the epidermis, below it is the dermis, and in between them lies the basement membrane. The epidermis is derived from the ectoderm and produces the basal lamina. The dermis develops from mesoderm and produces the reticular lamina. Epidermis and dermis together form some of the most varied structures found within vertebrates. The epidermis produces hair, feathers, claws, nails, horns, beaks and some type of scales. The dermis gives rise to dermal bones of reptiles. Collectively, epidermis and dermis form teeth, denticles, and scales of fishes.