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4 April, 14:12

What is one example of an index fossil?

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Answers (2)
  1. 4 April, 14:29
    0
    trilobites and ammonites

    Explanation:

    Trilobites are a fossil group of extinct marine animals which became extinct around 250 million years ago.

    Ammonites are a extinct group of marine invertebrates. They are molluscs in the class Cephalopoda in which we also find octopuses, squids, cuttlefishes and the nautilus.
  2. 4 April, 14:40
    0
    A trilobite could be an example of an index fossil, because they only existed for a certain period of time
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