What is it called when the continents once formed a huge supercontinent?

Many million years ago, the huge supercontinent theory was proposed by one man named Alfred Wegner. He explained the theory of continental drift which lead to the supercontinent called Pangea. Another man named John Tuzo Wilson proposed to theory of plate tectonics which helped scientists to believe Wegner's ideas. Together Wilson and Wegner proposed Pangea. Later on, it was split into two other smaller continents called Laurasia and Gondwanaland.