Deep TimeLife & Evolution

First reptiles

310 million years agoNotable

Reptiles spread across dry land, ancestors of dinosaurs, birds, lizards and turtles.

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 → First reptiles

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BookJennifer A. Clack

Gaining Ground: The Origin and Evolution of Tetrapods ↗