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Chapter 1- Your Inner Fish

Chapter 1- Your Inner Fish. PowerPoint by Ariel Gordon. What are ideal conditions in looking for fossils from around 375 million years ago?. Well exposed rocks A place that is open where you won’t be disturbed (esp. by PennDot) No Volcanic or Metamorphic rocks

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Chapter 1- Your Inner Fish

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  1. Chapter 1- Your Inner Fish PowerPoint by Ariel Gordon

  2. What are ideal conditions in looking for fossils from around 375 million years ago? • Well exposed rocks • A place that is open where you won’t be disturbed (esp. by PennDot) • No Volcanic or Metamorphic rocks • Place needs to have extreme weather conditions • The Arctic • Mt. Everest

  3. Shubin, Neil. "Your Inner Fish: Teaching Tools." TiktaalikRoseae: Home. University of Chicago, 2006. Web. 07 Sept. 2011. <http://tiktaalik.uchicago.edu/book-tools.html>.

  4. Why Should we focus on 375 Million year old fossils? • 385 million years ago normal looking fish are present • 365 million years ago reptiles and amphibians with limbs are present • We need the transitional period • 375 million years ago gives the proof and that time period can show exactly how our bodies changed

  5. What did they find • “a beautiful intermediate between fish and land living animals” (22). • A fossil with scales like a fish • Fins and fin webbing similar to those of a fish • Had a flat head and Neck • Fossil had its eyes on top of its flat head • Inside the fin there were shoulder, elbow and wrist joints

  6. Shubin, Neil. "Your Inner Fish: Teaching Tools." TiktaalikRoseae: Home. University of Chicago, 2006. Web. 07 Sept. 2011. <http://tiktaalik.uchicago.edu/book-tools.html>.

  7. What do the findings show? • Tiktaalik was a fish that could do a type of push-up • Many parts in Tiktaalik, like the wrists joints, relate to the early development of land animals • Early land animals, like Titktaalik, developed flat heads • Tiktaalik breathed underwater like a fish, but it also could breathe out of water • Tiktaalik lived in a tropical climate with shallow streams and rivers

  8. How do the findings fit into the overall picture in the development of our bodies? • Its shows that human development wasn’t random • Fossils in general can show the development of our bodies from animals • The history of our bodies can be found in all of the organisms around us • Shows exactly what bones we lost and how our bodies have improved over time • We can trace how we came about in everything that is living around us

  9. THE END

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