The most severe mass extinction on Earth occurred at the end of the ____ period.
A) Cambrian
B) Carboniferous
C) Jurassic
D) Permian
E) Devonian

Question

Quizplus · Accepted Answer

The most severe mass extinction, known as the Permian-Triassic extinction event or the Great Dying, occurred at the end of the Permian period, wiping out approximately 96% of marine species and 70% of terrestrial vertebrate species.

The Most Severe Mass Extinction on Earth Occurred at the End