The fiercest Dinosaurs
Tyrannosaurus rex (King tyrant lizard) lived about 70 millions years ago. At over 12 meters long and three times as tall as a man, it was one of the largest and the deadliest predator that has ever lived on land.
The largest Dinosaurs
Experts think that Ultrasaurus was the heaviest dinosaurs among all the dinosaurs including those who lived in the sea and in the air.
The heaviest Dinosaurs
Experts also think that Seismosaurus was the longest dinosaurs (39-52 meters). It was ever longer than a blue whale which is the biggest animal alive today.