A 42.6m-year-old ancient fossil of four-legged whale with hooves has been discovered near the coast of Peru, providing new insights into how the ancestors of the Earth’s largest mammals made the transition from land to sea.

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A 42.6m-year-old ancient fossil of four-legged whale with hooves has been discovered near the coast of Peru, providing new insights into how the ancestors of the Earth’s largest mammals made the transition from land to sea.