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Which conodont marks the beginning of the Roadian Stage?
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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 beginning of the Roadian Stage is marked by the first appearance of the conodont Jinogondolella nankingensis in the fossil record.12