Life
Ancient animal’s fossilised brain prompts rethink of spider evolution
A 500-million-year-old sea creature called Mollisonia shared a similar brain structure to modern spiders, suggesting that arachnids first evolved in the sea
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A 500-million-year-old sea creature called Mollisonia shared a similar brain structure to modern spiders, suggesting that arachnids first evolved in the sea
Flatworms are slow-moving predators with poor vision, but one of them managed to attack a spider as it guarded its egg sac