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The Devonian

Did you know what that fossil was?

You clicked on the fossilised remains of a fish called Pteraspis, pictured below. They were found in the Welsh borders and Herefordshire in rocks that formed at the beginning of the Devonian period, about 400 million years ago.

Pteraspis did not look much like the fish we see today. It had no jaws, and its head and upper body were covered in bony plates.

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Fossil

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