1. In the origin of vertebrates, what were the three steps in evolution? What were their different feeding strategies? 2. The term "amphibian" used to include all tetrapods, but now is reserved for only members of Lissamphibia. What are the four groups of Lissamphibia (3 living, 1 extinct)? 3. What are the four arguments for endothermy in dinosaurs? Describe each argument. 4. What were the two major evolutionary innovations of vertebrates? Why are they important?
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Step 1: The three steps in the evolution of vertebrates were the appearance of fish with traits such as a complete vertebral column, jaws, and body scales, followed by the emergence of amphibians as the first tetrapods that adapted to life on land and in water, and Show more…
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