Evolution: Fish out of water

A remarkable new fossil published in Nature provides spectacular insight into a major evolutionary transition — when fish first transformed their fins into limbs, opening up the prospect of a migration on to land.

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This press release is copyright Nature. VOL.440 NO.7085 DATED 6 April 2006

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Evolution: Fish out of water (pp 757-763, 764-771; N&V)

A remarkable new fossil published in Nature provides spectacular insight into a major evolutionary transition — when fish first transformed their fins into limbs, opening up the prospect of a migration on to land. In two Articles this week, Neil Shubin and Edward Daeschler and their colleagues describe the fossil of a flattened, alligator-like fish with robust, leg-like fins that lived around 383 million years ago in the shallows of what is now Nunavut Territory in Arctic Canada. The fins of the new form could have been flexed and extended like legs; other landlubber features include a distinct neck-region and large, robust ribs.

In an accompanying News and Views article, Per Erik Ahlberg and Jennifer A. Clack suggest that the new form could become an icon of evolution in action as potent as Archaeopteryx, a transitional fossil between reptiles and birds.

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Published: 05 Apr 2006

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