Toarcian turnover (Q378170)
mass extinction event that marked the end of the Pliensbachian stage and the start of the Toarcian stage of the Early Jurassic period, c. 183 Ma
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description mass extinction event that marked the end of the Pliensbachian stage and the start of the Toarcian stage of the Early Jurassic period, c. 183 Ma

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