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PALEOZOIC ERA

PALEOZOIC ERA. Age of sea-life. CAMBRIAN. 542 mya Gondwanaland- mainly in S. Hemisphere “ waterworld ”. CAMBRIAN LIFE. Ocean life Trilobites- over 800 species First shells. Ordovician. 505 mya Mostly water (still) Barren land. Ordovician. Ocean life- warm reefs Mollusk

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PALEOZOIC ERA

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  1. PALEOZOIC ERA Age of sea-life

  2. CAMBRIAN • 542 mya • Gondwanaland- mainly in S. Hemisphere • “waterworld”

  3. CAMBRIAN LIFE • Ocean life • Trilobites- over 800 species • First shells

  4. Ordovician • 505 mya • Mostly water (still) • Barren land

  5. Ordovician • Ocean life- warm reefs • Mollusk • Trilobites • Cephlapods • First fish

  6. Ordovician fossils (IL)

  7. Silurian • 443 mya • Still Gondwanaland • North America under water

  8. Silurian life • Corals • Brachipods • Sea scorpions • First plants- ferns

  9. Devonian • 416 mya • Laurasia- northern hemisphere • Gondwanaland- southern hemisphere

  10. Devonian • Boney fish • Land plants • First amphibians Age of fishes

  11. Age of fishes

  12. MISSISSIPPIAN • 360 mya • Still Laurasia/ Gondwanaland • Many forest

  13. MISSISSIPPIAN LIFE • Insects • Amphibians • Large trees • Coal products

  14. PENNSYLVANIAN • 320 mya • Pangaea begins to form

  15. PENNSYLVANIAN LIFE • Abundant insects • First reptiles • Coal products

  16. PERMIAN • 286 mya • PANGEA is formed • Forest of ferns

  17. PERMIAN LIFE • Ammonoids • Large amphibians • reptiles

  18. Mass extinction Siberian traps Methane melting

  19. What went extinct? • Trilobites • Ammonites • Many fish species • Many coral species

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