I found this on Martin's blog:
FEBRUARY 25, 2020
This is really too cool.
A new genus of pteradon has been discovered, and named after the dragons of House Targaryen.
I am delighted, needless to say. Especially by the kind words of the discoverer, paleontologist Rodrigo Pegas, who is solidly on my side about dragons having two legs, not four, and pfui on those medieval heralds with their wyvern talk.
Alas, there is no evidence that the real-life Targaryendraco wiedenrothi actually breathed fire.
No evidence… yet.
I don't know if anyone else knows this but there is a creature described in the Bible (don't be dismissive just bc it's in the Bible- think how long ago it was written, way before dragon lore) that describes dragons to a T. Fire breathing and all!