when did pangea exist

Pangea existed roughly between 299 to 180 million years ago, forming near the end of the Paleozoic and beginning of the Mesozoic and beginning to break apart in the early Jurassic. The commonly cited timespan is that it assembled around about 335 million years ago and began to fragment about 200 million years ago, with its fully assembled supercontinent phase lasting roughly 100 million years. This makes it the most recent of Earth's supercontinents, preceding the current continental arrangement.