SmithLifeScience      Name______________________  Period ______

When the Crocodiles Ruled

  Location of Fossils

A. Create maps of this actual fossil site from Wyoming. 

B. Use a blue colored pencil for water animals and a brown colored pencil for land animals.

C. Put an R in each square where  Rhinoceros teeth were found; use M to indicate Mice
    tooth; use C for a crocodile tooth, and D for Deer teeth, and F for Fish Skeletons.

1. Look at the animal fossils in Layer A.  Was Layer A water, land, or both? _______________

2. Look at the animal fossils in Layer B.  There are animal fossils from land and water areas.  Let's draw where the ancient lake was located.  Use a blue pencil to draw a line around the water fossil letters and lightly shade the lake.  Label  it Fossil Lake.

3. Look at the fossils in Layer C.    Was Layer C just water, just land or both? ______________

4. If Layer C is the oldest, describe how this area has changed from C to B and then B to A.

5. A member of your team wants to look for fossils of dry-climate plants.  What layer would
   you tell them to look for dry-climate plant fossils?

   Layer ______

   Why did you tell them to look in that layer?

6. Two earth scientists have analyzed the data to explain the changes in the Layers.  One
    scientist said that the area had been uplifted, causing the area to gain elevation.  The
    other scientist disagreed.  He said that the area had probably lost elevation over time.

   Which scientist do you agree with?  ______________________________________

   Write down one piece of evidence that proves who is correct.

Layer A

Layer B

Layer C