Tyrannosaurus may not be killing, but he is biting his face violently. Rather, new research reveals that these bitter brawls are probably the result of various individuals competing for prizes, such as territory, peers, or higher positions.
Researchers found it after analyzing the skulls and jaws of 202 Tyrannosaurus with a total of 324 scars. The team soon noticed that the young Tyrannosaurus had no bites on his face. Instead, about half of the old Tyrannosaurus had them. This probably indicates that only older members of one gender participated in these battles.
Caleb Brown, a curator and senior researcher at the Royal Tyrrell Museum in Alberta, Canada, emailed Live Science, “If you think together, you can connect how these animals were fighting. I can do it. ” “They probably adjusted each other’s posture and size, and then tried to grab each other’s heads between their chins.”
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Tyrannosaurus was a meat-eating group dinosaur Ruled as a predator in Asia and North America over the last 20 million years Cretaceous (145 to 66 million years ago). The project began with the discovery of a single Tyrannosaurus specimen. It is a maxilla excavated in Dinosaur State Park in Alberta in 2017. Jaw analysis revealed a series of long “scars that arced across the sides of the bone.” Said. “These were probably traces of another healed Tyrannosaurus tooth, forming these raised ridges.”
There are many scars on the skull of Tyrannosaurus. However, no one saw many of these scars in order to systematically examine them. So Brown and his colleagues began recording the occurrence, shape, and other details of these scars on the Tyrannosaurus skull. Albertosaurus, Daspletosaurus When Gorgosaurus..
The team found that facial scars were very common. Bites were present in about 50% of large (but not yet mature) Tyrannosaurus and about 60% of adult-sized Tyrannosaurus. In addition, scars tended to appear on the upper and lower jawbones, including tooth puncture scars and elongated scars.
The team determined how large the “victims” and “bitter people” were by comparing the spacing between the teeth according to the skulls and their bite marks. “Animals were generally of similar size,” that is, it wasn’t David-versus-Goliath The situation, Brown said.
These data suggest that Tyrannosaurus “did not do this behavior when they were young, and started only when they were about half-grown, and only in animals of approximately the same size.” In addition, these nasty, but generally non-fatal, scar epidemics suggest that old Tyrannosaurus were fighting each other on a regular basis, he said.
Modern animals also often fight their species when they are sexually mature. “To see how these animals are old enough to breed and how they are ranked compared to their rivals or compared to their potential peers. We are testing the body of water, “Brown said. Tyrannosaurus may also have begun to contend with each other for sexual maturity, “but we don’t really know because this is really hard to test,” he added.
It is almost impossible to determine the sex of a dinosaur. Scientists cannot distinguish between females and males unless the dinosaurs die during pregnancy or spawning.
“We don’t even know [the biting behavior] Only men, women, or both were in combat, but it’s interesting to consider possible scenarios, especially if you’re good at determining the gender of dinosaurs in the future. ” Mr Brown said.
This study was published online in the journal on September 6th. Paleontology..
Originally published in Live Science.
Tyrannosaurus bit each other’s face at the Dino Fight Club
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