“This is a cool discovery, we knew this animal was here but now we can show it is different to other azhdarchids and so it gets a name,” said David Hone, lead author of the study from Queen Mary University of London. Tyrannosaurus rex had a built-in air conditioner, study saysĪlthough azhdarchids were incredibly large and lived in Asia, Africa, Europe and North and South America, their fossil record is sparse and fragmentary. rex with its dorsotemporal fenestra glowing on the skull.