• Reuters

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Inside the stout fins of a fish that, about 380 million years ago, prowled the shallow waters of an estuary in what is now eastern Canada, scientists have found what they call the evolutionary origins of the human hand.

The researchers were examining a remarkably complete fossil of a fish called Elpistostege watsoni. It represents a pivotal stage in a landmark event in the history of life on Earth — the transition of fish to land vertebrates.

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