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Aptian Stage
Introduction References & Edit History Related Topics
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A chart showing the Cretaceous period of the Mesozoic era on the geologic time scale, listing its division into Upper and Lower epochs, with stages such as Maastrichtian, Campanian, and Berriasian, and corresponding ages in 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.

Aptian Stage: References & Edit History

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  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

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Article History

Type Description Contributor Date
Add new Web site: Academia - The Aptian Stage: Back to fundamentals. Oct 31, 2021
New text updating the boundary years for the stage added. May 06, 2013
Added Cretaceous Period geologic time scale. Jul 07, 2011
Article revised and updated. Jan 19, 2007
Article added to new online database. Jul 20, 1998
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