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7 October, 02:16

The fossil record shows that some animals, such as the horseshoe crab, have existed unchanged for millions of years. Other organisms, such as pigs, have undergone a well-documented sequences of changes. Which type of organism would be most useful as an index fossil? Explain your answer.

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  1. 7 October, 02:34
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    The organism such as pig because their ancestors may have died and they have evolved with earth changes
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