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  1. Oxford Dictionary

    derived fossil

    • n.
      a fossil redeposited in a sediment which is younger than the one in which it first occurred.

    • noun: derived fossil, plural noun: derived fossils

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    derived fossil

    • IPA[dəˈrīvd]
    • n.
      a fossil redeposited in a sediment which is younger than the one in which it first occurred.

    Oxford American Dictionary