Question Sheet: Invisible fossils of the first animals


Before reading:

  1. What is a fossil?
  2. When did animals first form — and where?
  3. What are molecules?
  4. Where might scientists look for clues to early life if there are no stone

    fossils of those organisms?

During reading:

  1. What are the cores that Gordon Love examined, and where were they collected?
  2. What are molecular fossils and how do they differ from conventional fossils?
  3. How long ago did animals exist, based on the new molecular fossil data – and

    how much older is that than previous...

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