2. Calculate speed

3. Suggest order of tracks

4. Compare results3 3 2 Stride Length Stride length 1 Stride length 0

6. Calculate speed

7. Suggest order of tracks

8. Compare resultsmud cracks

10. Trilobite track way activity Cruziana trilobite trackways Probably Upper Cambrian (500 million years old) Probably from Wales LL.15976

11. Cruziana trilobite trackways Probably Upper Cambrian (500 million years old) From Wales LL.15976

12. 0° Students asked to: Plot the direction of travel? What does this tell us about the behaviour of the trilobites? 45 ° 315 ° 90 ° 270 ° 1 2 Direction of movement 3 4 135 ° 225 ° 5 6 180 °

13. What burrowing attitude can you identify? Can you find any resting traces? From: Seilacher, A. (2007) Trace fossil analysis. Springer, Berlin, 225 p

14. How many different trilobites have made the trails?