Epoch Llandovery Epoch

Time runs left (older) → right (younger) · Hover a card for details

Recovery after Ordovician extinction; reef ecosystems rebuild (443.8-433.4 Ma).

443.80 Ma – 433.40 Ma · 10.40 Ma duration

Axis labels in Ma (millions of years ago) · Click a card for details

Llandovery Epoch 1

443.8 Ma End-Ordovician Extinction First major mass extinction Two-phase extinction driven by glaciation and sea level fall; ~85% of marine species lost.