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Fossil of Ancient Amphibian Mandible

Fossil of Ancient Amphibian Mandible

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Ancient Amphibian in Water

Ancient Amphibian in Water

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Fossil Skull of Ancient Amphibian

Fossil Skull of Ancient Amphibian

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A rare Devonian period (450 million year old) Ammonite fossil, found in Morocco, which forms part of a Bonham's Annual Gentleman's Library sale, on Wednesday January 18th. (Photo by Ian Nicholson/PA Images via Getty Images)

A rare Devonian period (450 million year old) Ammonite fossil, found in Morocco, which forms part of a Bonham's Annual Gentleman's Library sale, on Wednesday January 18th.   (Photo by Ian Nicholson/PA Images via Getty Images)

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Fossilized Tracks of Ancient Amphibian

Fossilized Tracks of Ancient Amphibian