A claw is a curved pointed appendage, found at the end of a toe or finger or, in arthropods, of the tarsus. Arthropods The correct term for an arthropod's 'claw' is a chela (plural chelae). Legs bearing a chela are called chelipeds. Chelae are also called pincers. ==Tetrapods== are among the largest recorded]] In tetrapods, claws are made of keratin and consist of two layers. The unguis is the harder external layer, which consists of keratin fibers arranged perpendicular to the direction of growth and in layers at an oblique angle. The subunguis is the softer, flaky underside layer whose grain is parallel to the direction of growth. The claw grows outward from the nail matrix at the base of the unguis and the subunguis grows thicker while travelling across the nail bed. The unguis grows outward fas

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