Limited access

Upgrade to access all content for this subject

The largest mass extinction event in Earth's history was the

A

K-T, or Cretaceous, which occurred roughly 65 MYA.

B

Triassic-Jurassic, which occurred about 200 MYA.

C

Devonian, roughly 350 MYA.

D

Ordovician-Silurian, about 440 MYA.

E

Permian-Triassic, which occurred approximately 250 MYA.

Select an assignment template