Place the cards with the series of horse skeletons or dog skeletons in front of you on your desk. Try to arrange them in chronological orderfrom the oldest species to the most current species. When complete, have your teacher check to see if you are correct. When you have sorted them correctly, fill in the table below with a paragraph about how the species has changed over time. Mix up the cards and trade with another student, so you will get the second set and repeat steps 1–3.