End-Triassic extinction
201 million years agoMajor
Massive volcanism as Pangaea began to rift drove rapid warming and ocean change. Many competitors vanished, clearing the way for dinosaurs to dominate the Jurassic.
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Longest chain: The Big Bang → First stars ignite → Supernovae seed heavy elements → The Sun forms → Earth forms → First oceans → First life → Photosynthesis evolves → Great Oxidation Event → Complex cells (eukaryotes) → Multicellular life → First animals → Cambrian Explosion → First vertebrates → Jawed fish → Fish walk onto land → The amniotic egg → The Great Dying → Dinosaurs appear → End-Triassic extinction
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