Which of the following is the newest geological era? (1) Permian (2) Triassic (3) Cretaceous (4) Jurassic

Which of the following is the newest geological era? (1) Permian (2) Triassic (3) Cretaceous (4) Jurassic
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(3) Cretaceous Explanation: The correct chronological order of the geological eras (in million years before the present) are as follows:- Cretaceous: 72.1-145; Jurassic: 152.1-201.3; Triassic: 208.5-201.3; Permian: 254.2-298.9.
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Recent discoveries of ancient cratering near the Yucatan Peninsula support the theory that a meteor or cometary impact may have resulted in mass extinctions of species on Earth about 65 million years ago. During which geologic period is that impact thought to have occurred? w) Permian x) Triassic y) Jurassic z) Cretaceous

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