The time periods did the super continent Pangaea split into two blocks in the period of Tertiary. Thus option (D) is correct.
What is Pangaea?
Pangaea was the landmasses in the early geologic time which was surrounded by the water bodies around it. The water surrounded it is known as Panthalassa.
The big land mass known as Pangaea divided into 2 lands i.e. Laurasia and Gondwanaland. Around 280 million to 230 million years ago Pangaea started to split.
It divided into 2 subcontinent as the southernmost and the northernmost region. Thus option (D) is correct.
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