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When were Jurassic global temperatures coolest and warmest?
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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.
During the Jurassic Period, global temperatures were generally warm, though they fluctuated throughout the era. According to geochemical evidence, the coolest temperatures occurred during the Middle Jurassic, while the warmest temperatures were recorded in the Late Jurassic.1
Following this period of warmth, a notable drop in global temperatures occurred at the boundary between the Jurassic and Cretaceous periods.1