Deep TimeLife & Evolution

Insects appear

400 million years agoNotable

Insects spread across the land; later they become essential pollinators for most crops.

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 → Plants colonize land → Insects appear

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BookDavid Grimaldi and Michael S. Engel

Evolution of the Insects ↗