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They are examples of vestigial structures: structures that appear to be useless but once most probably had a function

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What major difference have scientists discovered between today's whales and the fossils of whale ancient ancestors?

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What major difference have scientists discovered between today's whales and fossils of whales ancient ancestors?

Bones of whale ancestors showed that whales had hip bones along with legs and hind feet.


What major difference have scientists discovered between today and whales and the fossils of whales ancient ancestors?

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