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Which geologic period came before the Devonian Period?
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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 geologic period that immediately preceded the Devonian Period is the Silurian Period.123
The Silurian Period spanned from approximately 443.8 million to 419.2 million years ago, marking the interval between the end of the Ordovician Period and the beginning of the Devonian Period.13