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When did the Terreneuvian Series occur?
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Cambrian Period
Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins during the late Cambrian Period. Included in the paleogeographic reconstruction are the locations of the interval's subduction zones.
The Terreneuvian Series occurred from 538.8 million to 521 million years ago. It represents the earliest stratigraphic series of the Cambrian Period.1