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When did the Changhsingian Age occur?
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Permian Period
Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins near the end of the Permian Period. Included in the paleogeographic reconstruction are the locations of the interval's subduction zones.
The Changhsingian Age occurred from 254.2 million to 252.2 million years ago during the Permian Period.1