Photo: "Frog-amander" Fossil May Be Amphibian Missing Link

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An illustration depicts Gerobatrachus hottoni, an ancient amphibian that had traits of both frogs and salamanders. The animal, found in a 290-million-year-old fossil, suggests that the two amphibian groups shared a common ancestor, scientists say.

Illustration by Michael W. Skrepnick, courtesy University of Calgary

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