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Mammal Evolution and Diversification

By Laura Klappenbach, About.com

A Quick Reference to Mammal Evolution and Radiation

Graphic © Laura Klappenbach. Photos courtesy Shutterstock.
The chart above provides brief information about the various eons, eras, periods, and epochs that are used to describe the Earth's history. Click on the image to view full size or download a PDF version of the chart.

Refs:

Prothero DR. 2007. Evolution: What the Fossils Say and Why it Matters. New York: Columbia University Press. 381p.

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