The Carnian Pluvial Event (CPE) is a major global climate change and biotic turnover occurred during the Carnian stage, during the Late Triassic Period around 230 million years ago.
The base of the CPE is marked by a ~ 4% negative shift in carbon stable isotopes of fossil molecules from higher plants and total organic carbon. A ~ 1.5‰ negative shift in oxygen stable isotopes of conodont apatite suggests a global warming. Major changes in organisms responsible for calcium carbonate production occurred during the CPE. A halt of carbonate sedimentation is observed in deep water settings of Southern Italy that was probably caused by the rise of the Carbonate Compensation Depth. High extinction rates occurred among ammonoids, conodonts, bryozoa and crinoids. Major evolutionary innovations followed the CPE, as the first occurrence of dinosaurs, calcareous nannofossils and scleractinian corals.
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