Trilophosaurus
 Trilophosaurus (Greek for Lizard with three ridges) was a lizard-like Triassic diapsid reptile related to the archosaurs. It was a herbivore up to 2.5 m long. It had a short unusually heavily built skull equipped with massive broad flattened cheek teeth with sharp shearing surfaces for cutting up tough plant material. Teeth are absent from the premaxilla and front of the lower jaw which in life were probably equipped with a horny beak.