Possible Fossilized bones of a Pteranodon has been found in Texas by a amateur fossil hunter. This specimen was toothless and larger than most birds, with a wing span between 3.6 to 4 meters. And it is said to be around 89 million years old from the Late Cretaceous.
Because only a damaged humerus was found its not really certain if it was a Pteranodon
"If it wasn't crushed so badly, it would be possible to determine if it really is Pteranodon," Myers said.Source: http://www.sundayobserver.lk/2011/03/27/jun02.asp