Asselian Stage

Introduction References & Edit History Related Topics

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A geologic time scale chart showing the Permian period of the Paleozoic era, divided into Cisuralian, Guadalupian, and Lopingian epochs with their corresponding ages and millions of years ago.

A detailed geologic time scale chart displaying Earth's history from the Hadean Eon over 4.5 billion years ago to the present, organized by eons, eras, periods, epochs, and ages with color-coded columns and corresponding dates in millions of years.

Asselian Stage: References & Edit History

More Articles On This Topic

Permian Period
Major subdivisions

Article Contributors

Primary Contributors

Other Encyclopedia Britannica Contributors

John P. Rafferty

Article History

Type	Description	Contributor	Date
	New text updating the boundary years for the stage added.	John P. Rafferty	May 06, 2013
	Added Permian Period geologic time scale.	John P. Rafferty	Jul 07, 2011
	Article revised and updated.	John P. Rafferty	Feb 09, 2007