Pangaea

Definition

Pangaea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It eventually broke apart due to plate tectonics, leading to the formation of the continents we know today.

5 Must Know Facts For Your Next Test

1. Pangaea began breaking apart approximately 200 million years ago.
2. The fragmentation of Pangaea played a significant role in the distribution and evolution of vertebrates, including amphibians.
3. Amphibian diversification was influenced by the changing climates and habitats as Pangaea split.
4. The breakup of Pangaea led to geographic isolation, which is a key factor in speciation for amphibians.
5. Fossil evidence from Pangaea shows early forms of amphibians that adapted to various ecological niches.

Review Questions

• When did Pangaea start to break apart?
• How did the breakup of Pangaea affect amphibian evolution?
• What role did geographic isolation play in the speciation of amphibians following the fragmentation of Pangaea?

Related terms

Plate Tectonics: A scientific theory explaining the movement of Earth's lithosphere which caused the breakup of supercontinents like Pangaea.

Speciation: The process by which new distinct species evolve as a result of geographic isolation or other factors.

Fossil Record: The collection of preserved remains or traces of organisms from the past, providing important evidence about life on Earth during different periods, including when Pangaea existed.