A small, parrot-beaked ceratopsian dinosaur from the Early Cretaceous (approximately 125–100 million years ago). It measured about 6.5 feet (2 meters) in length and weighed around 44 pounds (20 kilograms). Known for its distinctive short beak, similar to a parrot’s, Psittacosaurus was a herbivore, feeding on tough vegetation. Some species had long filament-like structures on their tails, which might have been used for display.