The second panel from the “Age of Reptiles” features Permian Texas from 280 million years ago. Red cliffs of striped sedimentary rock deposited by ancient seas tower in the background. A Seymouria navigates a hazardous path between a predatory fin-backed Dimetrodon and its lunch, the plant-eating, sail-finned Edaphosaurus. Scale trees such as Sigillaria and Lepidodendron dot the landscape. Modern researchers have found no evidence that Dimetrodon actually ate Edaphosaurus.