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Peridinium bipes Peridinium willei Alexandrium tamarense Alexandrium fundyense Alexandrium tamiyavanichii Alexandrium minutum Alexandrium ostenfeldii Alexandrium margalefii Alexandrium taylorii Pyrocystis Tripos tenuis Tripos fusus Gonyaulax Protoceratium Noctiluca
0 50 100 150 190 Time (MYA)
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