Science

540m-year-old bug tracks are oldest footprints ever discovered

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  1. 540m-year-old bug tracks are oldest footprints ever discovered  The Guardian
  2. When did animals leave their first footprint on Earth?  EurekAlert (press release)
  3. Dating back at least 541 million years, earliest animal footprints found in China  The Japan Times
  4. Full coverage


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