What term describes the supercontinent that was believed to exist when all continents were joined together?

The term that describes the supercontinent believed to have existed when all the continents were joined together is Pangea. Pangea is a significant concept in the field of geology and plate tectonics, referring to a specific supercontinent that existed during the late Paleozoic and early Mesozoic eras, approximately 335 to 175 million years ago.

The formation of Pangea allowed for a unique environment and diverse ecosystems that influenced the evolution of species. Its existence played a crucial role in the geological history of Earth, as the breakup of Pangea led to the current configuration of continents we see today.

Other terms related to supercontinents, such as Gondwana, Laurasia, and Rodinia, refer to different configurations and times in Earth's history. Gondwana was a southern hemisphere supercontinent that included present-day South America, Africa, Antarctica, and Australia. Laurasia was a northern counterpart to Gondwana that comprised North America, Europe, and Asia (excluding India). Rodinia was another supercontinent that existed much earlier, around 1.1 billion years ago. Understanding these distinctions clarifies why Pangea is the correct term for the specific supercontinent encompassing all major landmasses in the referenced period