T Rex - VS - Largest Extinct Mammals - Size Comparison

T Rex - VS - Largest Extinct Mammals - Size Comparison Tyrannosaurus Rex or T Rex, is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex (rex meaning “king“ in Latin), often called T. Rex or colloquially T-Rex, is one of the most well-represented of the large theropods. Tyrannosaurus lived throughout what is now western North America. But what if the T Rex lived in the same time-period as some of the largest extinct mammals of all time? How would it compare size wise with the largest extinct mammalian animals? In this video we will see a direct head to head size comparison between the T-Rex and the largest extinct mammals like Arctotherium Angustidens the short faced bear, Megatherium the giant sloth, elasmotherium the siberian unicorn, the woolly mammoth and paraceratherium the largest extinct mammal that has ever existed.