- It is named after a legendary feathered serpent god of Mexico.
- They lived in the Late Cretaceous Period.
- Scientist think that they may have used their folded up wings as legs - and walked on all fours!
- They had a wing span of about 22 feet (10 metres). When flying it would have measured about 26 feet (8 metres) in length. Its beak was longer than an adult human.