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Fossils

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Fossils
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Fossils

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resources:
http://www.ehow.com/info_8451633_four-types-fossils.html
http://elm404.tripod.com/fossil.htm
http://en.wikipedia.org/wiki/Fossil
http://www.scienceviews.com/dinosaurs/fossilformation.html
http://www.ehow.com/info_8252244_five-types-fossils.html

resources:
http://www.ehow.com/info_8451633_four-types-fossils.html
http://elm404.tripod.com/fossil.htm
http://en.wikipedia.org/wiki/Fossil
http://www.scienceviews.com/dinosaurs/fossilformation.html
http://www.ehow.com/info_8252244_five-types-fossils.html

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Fossils

  1. 1. FOSSILS
  2. 2. Outline: • Definiton • How are fossils formed? • Sedimentary rocks • Types of fossils • Importance of fossils
  3. 3. What is a fossil? • Fossils are the preserved remains or traces of animals, plants, and other organisms from the remote past.
  4. 4. How is a fossil formed? LayersSediment Movement Erosion
  5. 5. Sedimentary rocks Sedimentary rocks : • types of rock.
  6. 6. FIVE MAIN TYPES OF FOSSILS Carbon Molds & Casts Films Trace fossils Preserved remains Petrified Fossils
  7. 7. Petrified fossils • Petrified fossils minerals replace all or part of an organism. • Water through the layers of sediment. • water evaporates.
  8. 8. A Mold • A mold hard parts are buried. Hard parts completely dissolve over time. Leaving behind a hollow area.
  9. 9. A cast • Water with dissolved minerals and sediment fills the mold • Minerals and sediment make a cast.
  10. 10. Carbon films/fern fossils • All living contains carbon. • The thin layer of carbon show an organism’s delicate parts
  11. 11. Trace fossils • Trace fossils show the activities of organisms. • Footprint • Coprolite (dinosaur poop)
  12. 12. PRESERVED REMAINS Amber Ice
  13. 13. What do fossils tell us? • give clues. • evidence about Earth’s. • Fossils help scientists
  14. 14. References • http://www.ehow.com/info_8451633_four- types-fossils.html • http://elm404.tripod.com/fossil.htm • http://en.wikipedia.org/wiki/Fossil • http://www.scienceviews.com/dinosaurs/fossi lformation.html • http://www.ehow.com/info_8252244_five- types-fossils.html

Editor's Notes

  • Fern:A fern is a member of a group of roughly 12,000 species[3] plants have neither seeds nor flowers

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