Log In

Grades

Subjects

You must be logged in to use this feature

Need an account?
Register Now

Info

Grades

9-12

Accessibility

Auditory, Visual

Permitted Use

Stream Only


Part of

Evolution Series

0 Downloads

42 Favorites

386 Views


Permian-Triassic Extinction

In this video segment from Evolution: "Extinction!", geologist Peter Ward shows rock layers laid down during the Permian and Triassic periods. The Permian layers contain abundant animal fossils and fossilized traces of animals, while the Triassic layers are almost devoid of fossils, suggesting a mass extinction event occurred 250 million years ago, at the end of the Permian.

Contributor:
Funder:
Producer: