This is absolutely insane that an animal this big used to fly in the skies!!
Scientists have supposedly discovered a flying reptile that lived 70 million years ago. They've named it the 'Cryodrakon Boreas', which is "the frozen dragon of the north wind". It had a wingspan of over 30 feet, was as wide as an F-16 jet, and weighed over 400 pounds! (see what it looked like below)