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Complex Brains Existed 520 Million Years Ago in Cockroach Relative

insect brain evolution 520 million years arthropod fossil

Your everyday cockroach might not seem terribly intelligent. But new fossil evidence from 520 million years ago suggests that this insidious insect might have had some surprisingly smart early ancestors. Cockroaches and other insects belong to a group called the arthropods, which arose some 540 million years ago. A new Chinese fossil is yielding new [...]

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