Answer:
Permian extinction
Step-by-step explanation:
- Permian extinction was the one that contributed to the greatest destruction among the five known mass extinction events.
- Permian extinction is known to occur around 15 million years ago.
- The extinction wiped out 96% of all marine species and 70% of terrestrial vertebrates and is the largest known mass extinction of events.
- The extinction led to a loss of the great amount of biodiversity due to which it took a long time for reestablishment of land-dwelling organisms.
- Several causes have been attributed to this extinction such as - volcanism, anoxia, hydrogen sulfide emissions, etc.