319-million-year-old fossilised fish illuminates backboned animals’ brain evolution

319-million-year-old fossilised fish illuminates backboned animals’ brain evolution

Source: birmingham

1/31/2023

Credit: Márcio L. Castro

A 319-million-year-old fossilised fish, pulled from a coal mine in England more than a century ago, has revealed the oldest example of a well-preserved vertebrate brain.

CT-scanning, where X-rays are used to reveal internal features, shows the skull of the creature contains a brain and cranial nerves that are roughly an inch long.

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