PALEOZOIC ERA

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PALEOZOIC ERA Age of sea-life

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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 - PowerPoint PPT Presentation

Transcript of PALEOZOIC ERA

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PALEOZOIC ERA

Age of sea-life

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CAMBRIAN

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

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CAMBRIAN LIFE

• Ocean life• Trilobites- over 800 species• First shells

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Ordovician

• 505 mya• Mostly water (still)• Barren land

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Ordovician

• Ocean life- warm reefs• Mollusk• Trilobites• Cephlapods• First fish

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Ordovician fossils (IL)

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Silurian

• 443 mya• Still Gondwanaland• North America under water

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Silurian life

• Corals• Brachipods• Sea scorpions• First plants- ferns

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Devonian

• 416 mya• Laurasia- northern hemisphere• Gondwanaland- southern hemisphere

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Devonian

• Boney fish• Land plants• First amphibians

Age of fishes

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Age of fishes

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MISSISSIPPIAN

• 360 mya• Still Laurasia/ Gondwanaland• Many forest

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MISSISSIPPIAN LIFE

• Insects• Amphibians• Large trees

• Coal products

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PENNSYLVANIAN

• 320 mya• Pangaea begins to form

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PENNSYLVANIAN LIFE

• Abundant insects• First reptiles

• Coal products

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PERMIAN

• 286 mya• PANGEA is formed

• Forest of ferns

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PERMIAN LIFE

• Ammonoids• Large amphibians• reptiles

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Mass extinction

Siberian trapsMethane melting

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What went extinct?

• Trilobites• Ammonites• Many fish species• Many coral species

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