Pangea was a mega continent that existed throughout the late Paleozoic and early Mesozoic eras. It gathered from earlier continental parts about 335 million years ago, and it started to split apart about 175 million years ago. Much of Pangaea was in the southern hemisphere enclosed by a superocean, Panthalassa, in opposition to the modern Earth and its concentration of continental mass. Thus Pangaea was the most recent mega continent to have existed and the first to be reconstructed by scientists.
The size of Pangaea was 148.43 million square kilometers (57.83 million square miles). Nowadays, the area of all the continents of the planet is 148.33 million square kilometers (57.27 million square miles).
The map below shows Pangea with modern borders.
And here the flag map of Pangea if this supercontinent had current world borders.
To learn more about Pangea have a look at the following books: