Permian-Triassic Extinction

PBS Learning Media
Contributed By
PBS Learning Media
Resource Type
Classroom Material
Keywords
evolution mass extinction catastrophic event Permian Triassic Period earth geologic deep time evidence record fossil Pangaea supercontinent continental drift ocean circulation climate change global warming oxygen anoxia atmosphere warming sea level Great Dying stagnation asteroid near earth objects NEO impact Caledon River South Africa
Subjects
Science History
Grade Levels
Grade 9 Grade 10 Grade 11 Grade 12
Related Resources

Permian-Triassic Extinction

Geologist Peter Ward shows rock layers laid down during the Permian and Triassic periods, in this video segment from Evolution: Extinction! 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.
Publisher
PBS Learning Media

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