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Which geologic period came before the Jurassic Period?
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Jurassic Period
Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins during the late Jurassic Period. Included in the paleogeographic reconstruction are the locations of the interval's subduction zones.
The geologic period that immediately preceded the Jurassic Period is the Triassic Period.12
The Triassic Period, which was the first period of the Mesozoic Era, lasted from approximately 252 million to 201 million years ago. It concluded when the Jurassic Period began.132