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Ordovician Period

Ordovician Period. 488-444 million years ago. 460 mya - Eurypterids Appear 450 mya – Chondrichthyes 444 mya – Mass extinction. 460 million years ago. Eurypterids Appear “Sea Scorpion” Largest arthropod to ever live (2 meters or 6 feet long) Predator of the sea.

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Ordovician Period

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  1. Ordovician Period

  2. 488-444 million years ago • 460 mya- Eurypterids Appear • 450 mya – Chondrichthyes • 444 mya – Mass extinction

  3. 460 million years ago Eurypterids Appear • “Sea Scorpion” • Largest arthropod to ever live (2 meters or 6 feet long) • Predator of the sea

  4. 450 million years ago • Ostracoderms • Jawless Fish • Bony plated armor • Cartilage “skeleton”

  5. 444 million years ago Mass Extinction marks the end of the Ordovician most likely due to glaciation of Gondwana…

  6. New Organisms that Appear • Cephalopods • Brachiopods • Crinoids • Ostracoderms

  7. What does it look like?

  8. Continents • Gondwana • Australia • Africa • Southern Europe • Antarctica • South America • Gondwanagradually moved toward the South Pole until it covered the pole at the end of the period. Most of Gondwana was covered by water during the Ordovician. • North America and EuropeNorth America, Western Europe and Northern Europe were located in the tropics. These land areas were sometimes covered with water and sometimes not.

  9. Picture It • Were there terrestrial animals or plants? • What would the land have looked like? • Was all life found in the sea or marine environments? THERE WAS NO LIFE ON LAND STILL! Ordovician was the time where marine life diversified!

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