Here is the primitive bird Deinonychus hand:
http://www.pnas.org/content/96/9/5111/F3.large.jpg
http://www.pnas.org/content/96/9/5111.full (figure 3)
Additional diagram of primitive bird hand (left picture):
http://upload.wikimedia.org/wikipedia/commons/thumb/3/39/Archaeo-deinony_hands.svg/220px-Archaeo-deinony_hands.svg.png
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