Tarbosaurus: a giant carnivorous lizard dinosaur

Tarbosaurus is a genus of giant predatory lizard dinosaurs of the tyrannosaurid family that lived in the territory of modern Mongolia and China approximately seventy-sixty-five million years ago, in the late Cretaceous period.

These large bipedal predators weighed up to four to six tons and reached a length of ten to twelve meters. Their powerful head, up to 1.3 meters long, with six dozen teeth up to eighty-five millimeters long, sat on an S-shaped neck. The disproportionately small forelegs were much smaller than those of other tyrannosaurids.

Each paw had two clawed toes. The hind three-toed limbs of dinosaurs, unlike the front ones, were powerful and long and carried the entire body weight. Taking huge steps, the tarbosaurus developed a speed of up to twenty-four kilometers per hour. A long, heavy tail served as a counterweight to the body and head.

The total brain volume of Tarbosaurus was 184 cubic centimeters. These dinosaurs had a well-developed sense of smell, as evidenced by the olfactory nerves and the large size of the olfactory bulb. Judging by the large auditory nerve, the Tarbosaurus had well-developed spatial and auditory functions.

The oculomotor nerve was poorly developed. In addition, unlike the tyrannosaurus rex, the tarbosaurus did not have binocular vision, its eyes looked in different directions. Despite the fact that this dinosaur looked clumsy, he had good coordination of movements.

It is not certain whether Tarbosaurus was a hunter or a scavenger. Its large size did not allow it to pursue prey for a long time and actively. The lack of binocular vision also created big problems during hunting. So, most likely, the Tarbosaurus, hunting well, did not miss the chance to feast on other people’s prey, including carrion.

In the Late Cretaceous in Asia, this type of dinosaur could not compete with any predator that lived in the neighborhood, be it oviraptor, gallimimus, deinocheir, gigantoraptor or velociraptor.

For the first time, the remains of Tarbosaurus were discovered in 1946 by a joint Soviet-Mongolian expedition to the Gobi, in the Umnegovi aimag.

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