1. Draw arrows to connect the matching rock layers by their fossils. (not all layers will have a match) 2 . Which section is older? _
3. An “unconformity” exists between two layers in the first section. What is one possible reason that the
unconformity appears only in the first section and not the second section? _
4. How old do you think the fossil that is shaped like a bullet in the 2
nd layer of the 2
nd section is based on the age of
the rocks around it? _
5.The fossil that is a wing-shaped clam (on the bottom layer of the first section) is found in sandstone in the first layer
and limestone in the second layer. What is one possible explanation for why they are not found in the same type of
rock. _