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WHILE DINOSAURS WALKED THE EARTH, MONSTERS RULED THE SKIES... For thousands of years, humans have believed that there were once flying monsters... See full synopsis »
Did flying monsters really exist beyond our wildest imaginations?
Did You Know?
Quetzalcoatlus had an enormous 2.5m (8.2 ft) long beak which it used to eat small animals whole. See more
Aktinofibrils, as the program explains, are what allowed pterosaurs to fold their wings in a neat, precise way, seemingly confusing them with the elongated muscles that ran through their wings. Aktinofibrils were actually stiffening rods. See more