Very interesting. Were T-Rex really warm blooded, i thought that was a trait dinosaurs did not have at all and an advantage e.g. mammals had, allowing us to adapt better to the shifting climate?
EDIT: birds even inherited warm bloodness from the dinosaurs: https://www.livescience.com/dinosaur-metabolism-warm-cold-blooded the more you know
sorry for spreading missinformation
dinosaurs were all kinds of -blooded, but t-rex was probably fully warm blooded, like birds. Other, especially "older" ones were cold blooded.