Q. Which among the following is a correct Chronological Order of periods in the Geological Time Scale?
Answer: Ordovician, Permian, Jurassic, Paleogene
Notes:

1. Ordovician: The Ordovician period occurred from approximately 485 million to 443 million years ago. It was a time when marine life, especially diverse marine invertebrates, flourished.
2. Permian: The Permian period occurred from approximately 299 million to 251 million years ago. It was characterized by the dominance of reptiles and the formation of the supercontinent Pangaea.
3. Jurassic: The Jurassic period occurred from approximately 201 million to 145 million years ago. It was known for the dominance of dinosaurs, including iconic ones like the Brachiosaurus and Tyrannosaurus rex.
4. Paleogene: The Paleogene period, often divided into the Paleocene, Eocene, and Oligocene epochs, occurred from approximately 66 million to 23 million years ago. This period saw the diversification of mammals and the decline of dinosaurs.

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