Fish fossil holds clue to the evolution of hind limbs
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The discovery of pelves and a partial pelvic fin from Tiktaalik roseae, a 375 million-year-old transitional species between fish and the first legged animals, reveals that hind legs actually evolved from enhanced hind fins. This finding reveals that a key step in the evolution of hind limbs happened in fish and challenges existing theories that such appendages evolved only after the move to land. Read more in PNAS.
Published on: Jan 17, 2014
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