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Which conodont marks the beginning of the Asselian 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 Asselian Stage is marked by the first appearance of the conodont species Streptognathodus isolatus.12