The Pteranodon was one of the largest pterosaurs in the Cretaceous period.  The striking bony crest on the rear of its head provided a counterweight to its long beak. It probably didn't flap its wings very often but instead took advantage of the wind to glide through the air  similar to an albatross. The Greek word Pteranodon means something like toothless wing.
 
Dimensions 9.134X5.866X2.52 Inch (W X D X H)