Fossil Internet Activity                                                         Name _________________________

                                                                                                Period _________ Date _________

 

Go to the following web address: http://www.pbs.org/wgbh/evolution/extinction/dinosaurs/

  1. How long did dinosaurs dominate the earth?

 

Click on “What happened 65 million years ago?”

Click on “Explore what killed the dinosaurs”

Click on “fossil record”

  1. What evidence suggests there was a catastrophic cause for the extinction of the dinosaurs?

 

Click on “Sea level”

  1. What evidence suggests that ocean levels fell dramatically at the end of the Cretaceous period?

 

  1. Do we know for sure what caused the mass extinction at the end of the Cretaceous period?

 

Click on “Riddle of the Bones” and watch the intro

  1. How did “Lucy” die?

 

Click on “You too can solve the riddle of the bones”

  1. Which continent were all these bones found on?

 

At the top of the page click on: How did they move?”, then “learn more”

  1. What information have scientists found in the Laetoli footprints?

 

 

  1. What type of fossil are the Laetoli footprints?

 

 

  1. Which of Lucys features tells us she was probably a good climber?  What use would this ability have for her?

 

Click on “What did they look like”, then “Learn more”

  1. What information can we get from the teeth of an organism?

 

 

Click on “are they all the same species”, then on “learn more”

  1. Are the fossils found at Laetoli and Hadar from the same species?

 

 

Click on “When did they live”, then on “learn more”

  1. How did scientists determine Lucy’s age?

 

 

 

  1. Briefly explain how scientists determined the age of the volcanic rock the Laetoli footprints were found in.