Step 1 : Introduction to the question "What is the name of the "supercontinent" that once covered nearly one-third of the Earth's surface?"
...About 300 million years ago, Earth didn't have seven continents, but instead one massive supercontinent called Pangaea, which was surrounded by a single ocean called Panthalassa. Pangaea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from earlier continental units approximately 300 million years ago, and it began to break apart about 175 million years ago. Pangaea was the most recent supercontinent to have existed and the first to be reconstructed by geologists.
