Limb orientation of "advanced" tetrapods differs from that of "primitive" tetrapods. What is the general trend with respect to this orientation, and what is its adaptive value?
Added by Emily S.
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Step 1: "Advanced" tetrapods have limbs that are oriented more vertically underneath their bodies, while "primitive" tetrapods had limbs that were oriented more horizontally to the sides of their bodies. Show more…
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