Secrets of dinosaur footprints revealed in bird X-rays

December 9, 2014 8:12 PM

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Secrets of dinosaur footprints revealed in bird X-rays

A detailed X-ray video of a modern bird foot is revealing the secrets of dinosaur tracks set down more than 250 million years ago.

The ancient tracks, made by the chicken-size dinosaur Corvipes lacertoideus, contain strange features that are likely the marks made when the dino withdrew its foot from the sediment a process that is impossible to document without X-rays that reveal what's below the sediments.

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