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Dorsal view of left hand of maniraptor theropods. (a) Deinonychus antirrhopus. Shown is a composite of YPM 5206 (manus) and YPM 5208 (semilunate carpal). (b) Archaeopteryx lithographica (Berlin specimen). (c) Nothura maculosa (YPM-OST 2086; DI is missing the ungual phalanx). DI—III, digits; C1–3, distal carpals comprising semilunate carpal; r, radiale.
