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Why do we have a good evolutionary record of the horse

User Nandhini
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2 Answers

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Person above is correct
User Borislav Markov
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Adapting and reacting to the changing environment, the then living horses changed too. They became larger (Mesohippus was about the size of a goat) and grew longer legs: they could run faster. The teeth became harder in reaction to the harder plant material (leaves) they had to eat.
User Corky
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