Lotosaurus
dating to theAnisian stage of the early Middle Triassic, about 245-237 million years ago
Lotosaurus was 1.5 to 2.5 m (4.9 to 8.2 ft) long and a heavily built quadruped. It was a herbivore, shearing off leaves with its toothless, beaked jaws. Lotosaurus, like some other members of the Poposauroidea, had a sail on its back, granting it an appearance superficially similar to that of Permian pelycosaurs like Dimetrodon and Edaphosaurus, although not as high.