Meet Ulughbegsaurus, the predator that ruled over the ancestors of the famous T.rex… — Despite their fearsome reputation, tyrannosaurs were not always the largest or fiercest dinosaurs of the Mesozoic Era. For tens of millions of years, the earlier relatives of Tyrannosaurus rex lived in the shadow of larger carnivores with serrated, knife-like teeth, known as allosaurs. This family of predators included — among…