5. What are Megafauna? 6. What are the hypotheses for the transition from "Coolhouse" to "Icehouse" conditions starting in the middle Miocene, 14Ma? 7. What is hypothesized to have caused the Eocene-Oligocene climate transition from "Warmhouse" to "Coolhouse" conditions? 8. What happened to the Indian continent during the Cenozoic and why is it important?