The bar chart shows the magnitude of the "Big Five" mass extinctions.
Which event, indicated by the tallest (filled) bar, was the most severe?
- A
Devonian
- Bcheck_circle
Permian-Triassic (P-T)
- C
Cretaceous-Paleogene (K-Pg)
- D
Ordovician-Silurian
Explanation
The end-Permian extinction (~252 Ma) is the most severe mass extinction in Earth's history, eliminating roughly 95% of marine species and ~70% of terrestrial vertebrate species.