Dragons and the Antediluvian World

In an earlier post, I suggested a brief listing of possible concepts for how Dragons could have been real. In this post I will go into much more detail--discussing why the Antediluvian world could play a very important role in proving the past existence of Dragons. To do this, I will first have to examine some of the important actions required for flight: 1: a sufficient amount of oxygen and air pressure. 2: hollow bones. 3: significantly-sized wings. 4: a sufficient-sized pair of lungs and heart.
Now, when you look at the facts describing the antediluvian world, you can see how it was a perfect environment for Dragon flight. Firstly, the oxygen level was 14% higher than it is today. Secondly, the air pressure was greatly increased. Thirdly, the weather and temperatures were extremely suitable for flying.
Another thing we must examine, too, was how the Dragons got airborne in the first place.
It is probable, as many 'dracologists' today would say, that the Dragons had a set of air bladders that served as both an aid for flight, and the producer of their fire, which will be discussed later. With these air bladders, along with a large enough pair of lungs and hollow bones, and a fast enough heart (or two), aided by the Pre-Flood world's air environment, Dragons would be able to fly, even with their scales. Now onto the subject of how Dragons breathed fire. There is much controversy over this subject, for there are many possible assets that would give dragons the ability to breathe flames. One plausible argument suggests that Dragons ate platinum, and that when this platinum bonded with hydrogen inside the air-bladders, it sparked fire. This thought would almost sound possible, but for the fact that platinum does not process that slowly when it hits hydrogen. It automatically ignites. Thus--how would Dragons be able to control the flames?
Another popular suggestion is one that goes along with two subjects: the Behemoth, and the Dragon. Some people believe that Dragons and the Behemoth both breathed fire. I personally do not agree with this, for nowhere in biblical records does it speak of the Behemoth breathing fire. Yet Dragons, in their many mentions throughout the original Hebrew Bible, are almost always spoken of under the word Sarifs. This word is a Hebrew word describing an actual, winged and fire-breathing Dragon. Leviathan, however is described to have sprayed some kind of sparking, flaming substance, and is portrayed to have scales that not even air can penetrate. This leads one to believe that Dragons (Or the Leviathan) did eat some kind of substance that sparked their flames, but as there are so many possibilities, it is almost impossible to decide which of these suggestions are the true ones. After reading about Leviathan and Dragons, I have come to the conclusion that they must have been at least related to one another. For the Bible describes him to have scales like chain mail, and burning flames. However, as there are no indications in Biblical or historical records that Leviathan and Dragons were of the same species, there are many doubts in my head. Were there marine Dragons? Leviathan certainly seems to be one! Or another thought: were Dragons like amphibians? were they born in water, and when they grew their legs, went to land? After living on land for however long was needed, did they sprout their wings? Another challenging thought--and a thought that would almost make sense!
Yet I still have doubts about this theory--perhaps the idea that Dragons are born from land-eggs has been too thoroughly pounded into me.

All of these supporting facts of Dragon's existence! what were they like? were they terrible monsters who lived to kill, or were they mighty Dragons who were used for aerial travel? Were they born from eggs above ground, or underwater? did they protect their young? did they have wings, or did they crawl like serpents?
As in all things of fantasy, myth and legend, we will probably never know, but the facts supporting Dragons' lives in history are many, and it is an entrancing subject to study on, whether in Fantasy or Reality.