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Fish Fossil Discovery Researchers report that they've found a key fossil showing a step in the evolutionary transition from fish with fins to four-legged animals that could crawl out onto dry land. Ira Flatow talks to one of the researchers who was in on the find.

Fish Fossil Discovery

Heard on Talk of the Nation

Fish Fossil Discovery

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Researchers report that they've found a key fossil showing a step in the evolutionary transition from fish with fins to four-legged animals that could crawl out onto dry land. Ira Flatow talks to a researcher about the find.

Guest:

Edward Daeschler, curator of vertebrate biology, Academy of Natural Sciences.