- Permian
Introduction to the last period of the Paleozoic Era, 286 to 245 million years ago.
www.ucmp.berkeley.edu/permian/permian.html
- Permian Period
Reviews its climate, plant and vertebrate animal life, and stratigraphy.
www.kheper.auz.com/gaia/Paleozoic/Permian/Permian.htm
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