These so-called 'dinosaur' teeth are all just whale teeth (matched with megafauna bones) from the Ice Age extinction event (115k BC). You wonder why nobody has ever challenged the 66M-year hoax, that only got started in 1980 by a cabal of academic frauds?
By analyzing the chemical makeup of ancient tooth enamel, researchers have successfully calculated the body temperature of the Tyrannosaurus rex for the first time, confirming the iconic predator was warm-blooded and highly active.