Paleozoic & Mesozoic Eras

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What is the Precambrian Time?

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The earliest part of Earth's history, before the Paleozoic Era, when life first appeared.

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What is the Paleozoic Era?

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A geologic era that lasted from about 541 to 252 million years ago, known for the development of early life forms.

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What is the Mesozoic Era?

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A geologic era that lasted from about 252 to 66 million years ago, known as the age of dinosaurs.

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What is the Cenozoic Era?

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The current geologic era, starting 66 million years ago, characterized by the dominance of mammals.

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What was Pangaea?

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A supercontinent that existed during the late Paleozoic and early Mesozoic eras, where all continents were joined together.

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During which era did the first fish appear?

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The Paleozoic Era.

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What significant event marks the end of the Paleozoic Era?

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The Permian-Triassic extinction event, the largest mass extinction in Earth's history.

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What are the main periods of the Mesozoic Era?

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Triassic, Jurassic, and Cretaceous periods.

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What major geological feature formed during the Mesozoic Era?

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The Rocky Mountains.

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What is the significance of the Cenozoic Era?

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It is known for the rapid evolution and diversification of mammals and birds.