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Frasnian Stage
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A chart detailing the Devonian period of the Paleozoic era, showing its division into Lower, Middle, and Upper series with stages such as Lochkovian, Pragian, Emsian, Eifelian, Givetian, Frasnian, and Famennian, alongside 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. Geochronology. Table 14: Periods of Sedimentary Perturbation

Frasnian Stage: References & Edit History

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Article History

Type Description Contributor Date
Link added. Aug 03, 2023
Add new Web site: Purdue University - College of Engineering - Definition of the Frasnian/Famennian Stage Boundary. Jun 09, 2017
New text updating the boundary years for the stage added. May 07, 2013
Period-level geologic time chart added. Dec 28, 2009
Article revised and updated. Feb 02, 2007
Article added to new online database. Jul 20, 1998
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