Bats do have pentadactyl limbs. Its wing is the forelimb version of the pentadactyl limb. In the bat, the forelimbs have turned into wings for flying by great elongation of four digits, while the hook-like first digit remains free for hanging from trees.
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I will focus on the on the pentadactyl FORELIMB (arm).
It is the limb that is common in vertebrates (e.g. humans, birds, dogs, whales, bats ALL HAVE ONE!). It supports the theory of...
