Is it a bird? is it a reptile? is it a plane?
Well, it is not a plane but
Fossils have been found of large flying creatures that look like reptiles but fly like birds.
In museums fossils of these flying monsters can be seen.
They are said to be primitive prehistoric beasts and are classified as the Anhanguera.
But when you check them out, you will find that they are not primitive at all.
Rather they are huge sophisticated flying wonders.
A very informative article will explain.
HERE'S THE LINK to Winged Wonders, the Anhanguera