Permian Period
299-252 million years ago · Event
Pangaea assembles, deserts spread, and the synapsids — Dimetrodon, then the proto-mammal therapsids — rule the land. It ends with the Great Dying, the closest complex life has ever come to annihilation: perhaps 90% of species gone, and the stage cleared for the dinosaurs.
On these timelines: The Age of Dinosaurs, Master
More from The Age of Dinosaurs
- Cretaceous–Paleogene extinction (66000000 BCE)
- Tyrannosaurus rex (68000000 BCE)
- Mesozoic Era (252000000 BCE)
- Paleozoic Era (541000000 BCE)
- Jurassic Period (201000000 BCE)
- Cretaceous Period (145000000 BCE)
- Triassic Period (252000000 BCE)
- Archaeopteryx and the first birds (150000000 BCE)
Around 299000000 BCE
- First amniotes (320000000 BCE)
- Dimetrodon (295000000 BCE)
- Therapsids, the proto-mammals (275000000 BCE)
- Carboniferous coal forests (310000000 BCE)