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

1. FOSSILS

2. Outline:
• Definiton
• How are fossils formed?
• Sedimentary rocks
• Types of fossils
• Importance of fossils

3. What is a fossil?
• Fossils are the preserved remains or traces of
animals, plants, and other organisms from the
remote past.

4. How is a fossil formed?
LayersSediment Movement Erosion

5. Sedimentary rocks
Sedimentary rocks :
• types of rock.

7. FIVE MAIN TYPES OF FOSSILS
Carbon Molds & Casts
Films
Trace fossils Preserved remains
Petrified
Fossils

8. Petrified fossils
• Petrified fossils minerals replace all
or part of an organism.
• Water through the layers of sediment.
• water evaporates.

9. A Mold
• A mold hard parts are buried.
Hard parts completely dissolve over time.
Leaving behind a hollow
area.

10. A cast
• Water with dissolved minerals and sediment
fills the mold
• Minerals and sediment make a cast.

12. Carbon films/fern fossils
• All living contains carbon.
• The thin layer of carbon
show an organism’s delicate parts

13. Trace fossils
• Trace fossils show the activities of organisms.
• Footprint
• Coprolite (dinosaur poop)

14. PRESERVED REMAINS
Amber Ice

15. What do fossils tell us?
• give clues.
• evidence about Earth’s.
• Fossils help scientists

16. 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