Hello everyone! Today's issue, to bring you is also a kind of Tyrannosaurus rex, belongs to the tyrannosaurus superfamily, living in the Late Cretaceous, 70 million years ago to 74 million years ago, it is a tyrannosaur, fossils are mostly found in Mongolia, China is also found, but most of them are just broken bones. Later, after continuous research by experts, they were finally combined and named the brave tyrannosaurus.
Tyrannosaurus rex
Warrior Tyrannosaurus was originally regarded as a species of Tyrannosaurus rex, and in recent years, as fossils have been discovered, the classification of Tyrannosaurus warriors has gradually become considered to be a genus of Tyrannosaurus. But scientists have also distinguished them from Tyrannosaurus rex, giving them a separate family, other genera in the Tyrannosaurus superfamily. In 2003 , a study of excavated fossils of tyrannosaurs found that they may have been related to Tyrannosaurus rex , but " Branchosaurus " did not have the head features of the genus Tyrannosaurus rex. This phenomenon, on the current level of science and technology can not give a reasonable explanation, but I believe that in the near future, with the continuous development of science and technology, slowly also give us the answer, according to the excavated fossil research, found in different regions of the tyrannosaur evolution of individual branches, the study of the juvenile fossil body of the branch dragon found that the branch dragon teeth than the tyrannosaurus rex more, there are unique tooth grooves in the mouth and nose, so it also further shows that the tyrannosaurus may not belong to the family of tyrannosaurs.
However, with the current science and technology, experts still classify Tyrannosaurus rex as a subfamily of tyrannosaurs in the family Tyrannosaurus. The subfamily includes the earlier dinosaurs, the later tyrannosaurs, and their fossils found in North America, as well as the recent discovery of the Mongol offshoots. Tyrannosaurus rex is a large-legged dinosaur, its feet are relatively stout than similar dinosaurs, located in the University of Münster in Germany, fossils, indicating this.
Tyrannosaurus rex fossils
Tyrannosaurus rex was a large tyrannosaur, the largest known tyrannosaur was 12 meters, the head was 4.2 meters above the ground, and the fossils unearthed showed 7.5 tons.
Tyrannosaurus rex, like tyrannosaurs, was the same size and appearance as other tyrannosaurs, and the forelimbs were relatively short, the smallest relative to the tyrannosaur family. Two fingers, thick hind limbs, supported its tonnage of weight favorably, of which the hind limbs had three toes, giving the Tyrannosaurus ample strength to grasp the ground, keeping its center of gravity at the hips, and keeping it level with the ground.
In 2003, a study of the Tyrannosaurus rex found that there were different differences between Tyrannosaurus rex in different regions, taking the Tyrannosaurus rex found in China and the Tyrannosaurus rex found in North America, there was a significant difference in bite force between the two, and with continuous in-depth research and comparison, the reason for this was that there were significant differences in the structure of their skulls.
Fossils of the dragon head of the Tyrannosaurus
With the continuous excavation of fossils, experts have found that Tyrannosaurus rex mostly lived in wet plains, mostly with river channels, and Tyrannosaurus rex was also a top predator, which could prey on large dinosaurs, but unearthed fossils show that most Tyrannosaurus rex mainly fed on small dinosaurs. At that time, its temper was also one of the best in the dinosaur circle, which is also the origin of its name, think about it, maybe and the current flat-headed brother is the same existence, not in the dry frame, or on the way to the dry frame, as a family of tyrannosaurs, Tyrannosaurus is also an egg-born dinosaur, but unlike other dinosaurs, Tyrannosaurus rex is very attentive to its cubs. They generally built their nests away from large carnivorous dinosaurs, which also made their cub survival rates very high, reaching their peak in the late Cretaceous period, when Tyrannosaurus rex and the overlord Tyrannosaurus rex were not to be underestimated, and the sickle dragons that existed at the same time as him were within his diet.
Most of the fossils of Tyrannosaurus rex are adult or sub-adult individuals, and rarely fossils of juvenile individuals have been found. The discovery in 2006 of a juvenile individual's body skeleton, the skull is relatively intact, measured to a head length of 29 cm, allowing archaeologists to study its growth to provide valid information. The age of this juvenile individual fossil was about 2 to 3 years old at the time of death. Compared with adult individuals, the structure of the skull is weak and the teeth are not very strong, which also shows that the juvenile individuals of Tyrannosaurus rex are basically not a threat to their peers, and also avoid competing with adult tyrannosaurs for the same food source. Well, today's episode of the program is here, like the small partner remember to like the collection, while the later will also be dedicated, the production of an episode of the video about the Tyrannosaurus, interested friends can click on the home page to view, we will see in the next issue.