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When did the Pragian Stage occur?
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Devonian Period
Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins during the early Devonian Period. Included in the paleogeographic reconstruction are the locations of the interval's subduction zones.
The Pragian Stage, which is the second of three standard divisions of the Early Devonian Period, occurred between 410.8 million and 407.6 million years ago.1