 Stoneage 50,000 to 70,000 years old Ural Mt, Siberia, Russia |
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 Ice Age 50 to 70 Thousand Years Ural Mountains, Russia |
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 50 to 70 Thousand Years |
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 Green River Formation, Wyoming Eocene 57 Million Years |
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 Juvenile (cast specimen) Age: Jurassic Location: Lyme-Regis, England This species is distinguished by its larger head and thick neck. The original or real fossil plate was found by Miss Mary Anning in 1830! The original is in the Natural History Museum in London. Very few juvenile plesiorsaurus have ever been found.
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 Adult and Juvenile (cast replicas) Poseidon Shale Early Jurassic Holzmaden, Germany These were marine reptiles that lived in the open seas. They were fast swimmers. The shape of the ichthyosaur is similiar to the unrelated dolphin which is a mammal. Ichthyosaur mostly ate belemnites (squids) and fish. They gave life birth to their young unlike most reptiles that lay eggs. |
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