The status of Tyrannosaurus rex can be said to be a household name in the dinosaur world. But in the eyes of paleontologists, Tyrannosaurus rex is only the end of the 150 million-year history of dinosaurs ruling the earth, and the time when the Tyrannosaurus rex really dominated the earth was only the last two million years before the mass extinction. Before the birth of the Tyrannosaurus rex, the dinosaur world was also ruled by generations of overlords.
According to the research of paleontologists, before the tyrannosaurs represented by the Tyrannosaurus rex dominated the earth, it was the shark toothed dinosaurs that controlled the supremacy of the earth, as a large and medium-sized carnivorous dinosaur, the shark toothed dinosaur had a larger body than the African elephant, and a mouth full of sharp teeth. Scientists have recently discovered the originator of the shark-toothed dinosaurs, which is the Urruberg dragon.
This Cretaceous dinosaur, called Urubergosaurus, was found in Central Asia, the first sharktoothosaur to appear in the Cretaceous period in the region. The fossils of Urubergosaurus found are not complete, only a fossil of this dinosaur at the left upper jaw, but with modern science and technology, people can already depict the general appearance of this dinosaur. Based on fossils of the left upper jaw, scientists predicted the size of the dinosaur and found that it was a theropod dinosaur weighing more than 1 ton.
Compared to the size of the Tyrannosaurus rex, Urubergosaurus seems to be a little less than good, but in the Cretaceous formation, there is no larger dinosaur fossil than it. The king of the appearance of the Tyrannosaurus rex, the shark toothed dragon that began with the Uluberg dragon is the deserved king of the dinosaurs. Scientists speculate that an important reason for the demise of shark-toothed dragons may be the rise of tyrannosaurs later.
But most of the tyrannosaurs were small carnivorous dragons, and how they replaced the peak of development is still a mystery. What do you think?