The Dinosaurs died out over 65 million. Scientist made 3 different periods in the dinosaur age this 3 periods are part of the Mesozoic era. A dinosaur that was said to be the biggest reptile to ever live was the Tyrannosaurus. T-rex didn't riley live in the Jurassic period it riley lived dering the cretaceous period. Tyrannosaurus was 42ft long from the tip of it's tail to the tip of it's snout and weighed 7.5 tons!
The picture above is a drawn sketch of what a Tyrannosaurus would look like in the Mesozoic era. Tyrannosaurus was probably one of the most terrifying animal that ever walked they earth. But T-rex could have been overtaken by larger animals or if it was injured by an animal it's hunting could fight back and injure the T-Rex. Then the Tyrannosaurus would probably ether heal the wound naturally or die from a lose of blood or have a Brocken bone and die of starvation.