Laurentia

Definition

Laurentia is a large continental craton that forms the ancient geological core of North America. It played a critical role in the formation and evolution of early vertebrates, including amphibians during the Paleozoic era.

5 Must Know Facts For Your Next Test

1. Laurentia was one of the major landmasses during the Paleozoic era, providing habitats for early vertebrates.
2. The Devonian period, often called the 'Age of Fishes,' saw significant diversification in vertebrate life on Laurentia.
3. Laurentia's geological stability contributed to the preservation of important fossil records, including those of early amphibians.
4. During the late Paleozoic era, Laurentia collided with other landmasses to form Pangaea, influencing vertebrate evolution.
5. Amphibian fossils found in Laurentia provide insight into the transition from aquatic to terrestrial life.

Review Questions

• What role did Laurentia play in the evolution of early vertebrates?
• How did Laurentia contribute to our understanding of amphibian evolution?
• Why is Laurentia significant in studying fossil records from the Paleozoic era?

Related terms

Paleozoic Era: A geologic time period spanning from about 541 to 252 million years ago, known for the emergence and diversification of vertebrates.

Devonian Period: A subdivision of the Paleozoic Era, lasting from about 419 to 359 million years ago, notable for significant fish diversification.

Pangaea: A supercontinent that existed during late Paleozoic and early Mesozoic eras, formed by the collision of earlier continents including Laurentia.