Continents begin to collide as Paleozoic Oceans close together

Laurentia collides with Baltica closing the northen branch of the Iapetus Ocean and forming the "Old Red Sandstone" continent. Coral reefs expand and land plants begin to colonize the barren continents.

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Pangaea Classroom Activity

Exploring the Ancient World of Pangaea
Exploring the Ancient World of Pangaea Answer Key

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