7. Which animal species lived for the shortest amount of time? 8. Which time periods only had one species of animals present?
9. Let’s say you want to find a fossil
of a ray-finned fish. In the picture
of rock layers below, which rock
“formation” or “member” would
be the best for you to start digging
in?
10. What is the first formation or
member would you be able to find
jawless fishes in?

1. body tissue that is connected to and moves the bones in the body hypertrophy 2. the ability of a muscle to move a weight repeatedly, or for an extended period of time tendon 3. the increase in the size of a muscle fiber in response to resistance training muscle strength 4. the most amount of weight a muscle can move at a single time skeletal muscles 5. the decrease in the size and strength of a skeletal muscle when it is not used atrophy 6. strong body tissue that connects the muscles to the bones muscle endurance