This extinction animal is T-Rex. T-Rex or Tyrannosaurus Rex. It lived in North America during late Cretaceous period, some 68-65 million years ago. T-Rex is the huge predator dinosaur with small arms and two-fingered hands. It has 13 feet tall and 40 feet long. It weighed is about 9 tons.
T-Rex hunted for its meal. It has very strong and long tooth. The largest tooth of T-Rex ever found was 12 inches long. It ate herbivorous dinosaurs, including Edmontosaurus and Triceratops. Sometimes it ate each other
At the end of Cretaceous period, all dinosaurs died out and also T-Rex. No one know why but the scientists suggests that it was due to climate change. The climate at the end of the Cretaceous was cooling – and a fall in sea level reduced dinosaurs and shallow water marine animal habitats.