Was it part of Pangaea 65 million years ago?
No, Pangaea broke apart about 200 million years ago.
By that time, Pangaea had long since broken up / ceased to exist.
Pangaea or Pangea (/pænˈdʒiː.ə/) was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from the earlier continental units of Gondwana, Euramerica and Siberia during the Carboniferous approximately 335 million years ago, and began to break apart about 200 million years ago, at the end of the Triassic and beginning of the Jurassic.
-Wikipedia
Regards,
Yes...Antarctica wasn’t where it is 90 million years ago.
In that time frame all of the continental plates were all over the place, some at the poles and some on the equator. Tying plant life to world environment (e.g., global warming) is risky since that continent might have been straddling the equator when those forests were growing. Yah gotta look at a piccie of the globe to get an idea of what was where.
Wow. And the earth continued living....