A scientific analysis of Dragons and other large fantastical flying reptiles

[Redfrogcrab]

I would wager that those creatures would have been bigger in earlier time periods on earth, and if we’re talking fantasy beasts then all bets are off.

A. Do you mean extremophiles? No fossil evidence supports large extremophiles*
B. *sigh* we're talking here as if they are real, flesh-and-blood animals and comming up with theories on how they could function and how they could exist

*excluding deep-sea animals, as, for some ungodly reason, organisms get really big and freaky the deeper you go, kinda, said ungodly reason is because larger organisms have a more efficient metabolism