Maastrichtian Stage
Also spelled Maestrichtian, uppermost of six main divisions in the Upper Cretaceous Series, representing all those rocks on a global basis deposited during the Maastrichtian Age (74.5 to 66.4 million years ago). The stage's name is derived from the city of Maastricht in the southeastern Netherlands, whose surrounding area serves as the classic type district for rocks of this age. The Maastrichtian Stage
posted by SuddenCat @ 11:52 PM
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