The name given by Alfred Wegener to the single large landmass composed of all continents is Pangaea. Pangaea is a term that refers to the supercontinent that existed about 300 million years ago, when all the continents were joined together as one massive landmass. This concept of Pangaea helps explain how similar fossils and rock formations are found on continents that are now separated by vast oceans. Alfred Wegener's theory of continental drift proposed that the continents were once connected in Pangaea and have since drifted apart to their current positions.
