Between the Jurassic and Cretaceous periods, during the last half of the age of the dinosaurs, pterosaurs evolved from small bird-sized flying reptiles to massive creatures. They stood taller than modern-day giraffes and boasted wings as wide as those of small airplanes.
How this happened presents an ongoing scientific mystery, especially since the eggs laid by pterosaurs changed little in size as the dinosaurs grew to become monsters. What special adaptation allowed them to grow so rapidly after their hatching?
