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500-million-year-old fossilized brains of Stanleycaris prompt a rethink of the evolution of insects and spiders
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![Astonishing” 500-Million-Year-Old Fossilized Brains Prompt a Rethink of the Evolution of Insects and Spiders Astonishing” 500-Million-Year-Old Fossilized Brains Prompt a Rethink of the Evolution of Insects and Spiders](https://scitechdaily.com/images/Stanleycaris-hirpex-Reconstruction.jpg)
Astonishing” 500-Million-Year-Old Fossilized Brains Prompt a Rethink of the Evolution of Insects and Spiders
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