375 Million-Year-Old Fish Fossil Sheds Light on Evolution From Fins to Limbs

Nature World News:

The surprising discovery that hind legs evolved from a kind of enhanced hind fin disputes the current belief that mobile rear appendages formed after vertebrates made their way to land.

Published in the Proceedings of the National Academy of Sciences, the study hinges on new fossils belonging to a 375 million-year-old fish species known as Tiktaalik roseae, first discovered in 2004 in northern Canada.

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