Question:
Which one is not a period of Mesozoic era of geological time scale ?
Which one is not a period of Mesozoic era of geological time scale ?
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Recall the three periods that make up Mesozoic and see which option ends the Paleozoic era instead.
Updated On: Jul 4, 2026
- Cretaceous
- Permian
- Jurassic
- Triassic
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The Correct Option is B
Solution and Explanation
Step 1: The Mesozoic era, the age of dinosaurs and gymnosperms, is divided into three periods in order: Triassic, Jurassic and Cretaceous.
Step 2: Permian is the last period of the earlier Paleozoic era and ends with the Permian to Triassic mass extinction, so it belongs to Paleozoic, not Mesozoic.
Step 3: So Permian is the correct answer.
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