Dragons with Wings - Existed?

Dragons remain fixtures in fantasy books, though portrayals of their nature differ.Contrary to most old folklore and literature J. R. R. Tolkien's dragons are very intelligent and can cast spells over mortals.These books greatly show the mind of a Dragon as well as their capabilties.These ideas were originally existed in the past.Proofs of it has been found in fossils in european countries.These proofs reveal that these dragons had wings for flight!!!!!!.Many may rise questions about whether these really existed.....yes they are.....how? here comes the answer....
Dragons inhale hydrogen in the atmosphere and store it in their hunches like bags which are placed in their chests.When they try to fly they exhale hydrogen.As we all know Hydrogen is the lightest element,it helps the dragon to fly when they use their wings.Also dragons is famous for their spitting fire.The jaws of the dragons are rich in platinum which when combine with the hydrogen emits fire.The dragons also cannot spit fire when in flight due to use of hydrogen for flight.Research is being done on this topic for the past 6 months...No one knows about the extinction of these dragons.