What is a supercontinent?
A supercontinent is a single continental landmass made of all or most of the continental lithosphere at the time. There seems to be a cycle of supercontinents that form and split up every 400 or 500 million years, driven by plate tectonics. Scientists estimate that there was a cycle of at least seven supercontinents on Earth. The last supercontinent, the famous Pangea, formed around 300 million years ago and broke up about 100 million years later. Within several hundreds of million years all the continents should join together to form once again a new supercontinent.