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Geology 5b. Define fossil and give examples of two index fossils each from Palaeozoic, Mesozoic and Cenozoic Era and indicate the age of those index fossils. UPSC 2023, 10 Marks

Geology 5b. Define fossil and give examples of two index fossils each from Palaeozoic, Mesozoic and Cenozoic Era and indicate the age of those index fossils. UPSC 2023, 10 Marks

Geology 5b. Define fossil and give examples of two index fossils each from Palaeozoic, Mesozoic and Cenozoic Era and indicate the age of those index fossils. UPSC 2023, 10 Marks

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