When is a thumb not a thumb? When it's an elongated wrist bone of the giant panda used to grasp bamboo. Through its long evolutionary history, the panda's hand has never developed a truly opposable ...
When is a thumb not a thumb? When it’s an elongated wrist bone of the giant panda used to grasp bamboo. Through its long evolutionary history, the panda’s hand has never developed a truly opposable ...
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