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Which Ordovician stages belong to the Early Ordovician Epoch?
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Ordovician Period
The distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins during the Ordovician Period. Included in the paleogeographic reconstruction are the locations of the interval's subduction zones.
The Early Ordovician Epoch consists of two stages:
- Tremadocian (Stage 1)
- Floian (Stage 2)
These stages occurred between 485.4 million and 470 million years ago.1