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Radiolarians

Radiolarians. Jack Scanlon Mrs. Leza February 20, 2013. What are they?. Primarily members of zooplankton Intricate silica shells with openings that allow their pseudopods to project outward These are used to gather food and it also reduces their sinking rates Reproduce sexually.

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Radiolarians

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  1. Radiolarians Jack Scanlon Mrs. Leza February 20, 2013

  2. What are they? • Primarily members of zooplankton • Intricate silica shells with openings that allow their pseudopods to project outward • These are used to gather food and it also reduces their sinking rates • Reproduce sexually

  3. Continued… • Some exist only in the upper layers of the ocean while others live in the bottom layers • Some migrate from these layers according to the season • Their dead shells contribute greatly to the bottom sediment of the ocean

  4. Species of Radiolarian • Polycystina is the most beautiful specimen of all the Radiolarians • They have fossils over 500 million years old • One of the oldest mircrospecimens • They have a complex skeleton

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