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Last updated on April 20, 2014 at 8:28 EDT

Latest Viviane Callier Stories

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2009-04-18 14:00:00

New research from Duke University suggests a reversal in the order in which two four-limbed creatures transitioned from water to land.The Ichthyostega and Acanthostega, lived some 360-370 million years ago in modern-day Greenland.Scientists had previously considered Acanthostega to be the first vertebrate animal to possess limbs with digits rather than fish fins, but Viviane Callier, a Duke University graduate student, found fossilized evidence to suggest that Acanthostega may have had a...