Psittacosaurus 13x4.5 cm

Psittacosaurus was a relatively small dinosaur. The head was very rounded, with a shorter snout than any other dinosaur. The front part of the mouth was shaped into a rounded beak that resembled a parrot's. It has therefore been speculated that Psittacosaurus ate a lot of nuts. Fossils also show that Psittacosaurus swallowed rocks, probably to process food more easily.