Page last updated at 00:12 GMT, Thursday, 7 January 2010

Footprints of the first fish to walk on land

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Scientists have discovered the footprints of the first creature that walked on land.

Researchers in the science journal Nature say the discovery of the footprints of a crocodile-like creature has led them to rethink our understanding of the evolution of life.

Pallab Ghosh reports.

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