What is the name of the supercontinent that existed approximately 300 million years ago?

Pangaea is the name of the supercontinent that existed approximately 300 million years ago during the late Paleozoic and early Mesozoic eras. This massive landmass brought together nearly all of Earth's continental crust into one large, interconnected supercontinent, which had significant geological and climatic implications for the planet. The existence of Pangaea facilitated the movement of species across vast distances, leading to unique evolutionary developments.

Pangaea began to break apart about 175 million years ago, a process that led to the formation of the continents as we know them today. Understanding Pangaea is crucial for grasping concepts of plate tectonics, continental drift, and the historical distribution of flora and fauna on Earth.

While Gondwana and Laurasia were significant landmasses that existed at different times and were parts of Pangaea after it began to break apart, they came into existence after the consolidation of Earth's continents into Pangaea. Atlantis, on the other hand, is a mythical place rather than a scientifically recognized geological formation, which places it outside the realm of legitimate geological history.