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Yes one, but not a trail. Tyrannosaurus Rex was only one and there were not three different types of this dinosaur. In March 2022, a study suggested that there were three species that fit into the tyrannosaur family. Now, another investigation denies it: there was only one king, and there was only one king Tyrannosaurus Rex.
March newspaper published by evolutionary biology It was signed by American scientists, who confirmed it Physical differences in the femur and other bones and dental structurescan indicate that samples Tyrannosaurus Rex Should is being Reclassified into three distinct types.
According to them, The T-Rex He wasn’t the only one of his kind, but he was accompanied empire and the queen. They relied on the variation in the thickness of the femurs and the shape of the lower front teeth between about thirty specimens of tyrannosaurs.
The evidence was not convincing and had to be answered because T. rex research goes beyond science and into the public domain.”
In response, seven paleontologists have now rejected this hypothesis in an article published in the journal science daily. They accuse their colleagues of quoting Inadequate statistical methods, limited comparison sampling, and false measurementsas stated in a statement from American Museum of Natural History.
“Your measurements for the size of each tooth do not match ours‘, explains to new worldJames Napoli, co-author of the study. “In fact, it appears that in some cases, if that tooth is missing, they measure the size of the tooth socket, which can be misleading.”
It was unreasonable to leave the public to think that the hypothesis of the multiplicity of species was true.”
The Tyrannosaurus Rex It was the only recognized genus of Tyrannosaurus since dinosaur It was first described in 1905. “It is true that there is variation in the size and shape of the T. rex bones, but in Our new study shows that this difference is small‘,” says Steve Brusatte, a paleontologist at the University of Edinburgh and one of the research co-authors.
Investigators are at odds
The new study looked at intraspecific variation in femur thickness in four other carnivorous dinosaurs and in 112 living bird species, descended from small, feathered theropods. the team I found that the differences were not exceptional: “Tyrannosaurus rex is still the true king of the dinosaurs,” identify those in the American Museum of Natural History.
The evidence was not convincing and had to be answered Because searching for R rex It goes beyond science and enters the public domain… It was unreasonable to let the public think that the multi-species hypothesis was true.” The New York Times Thomas Carr, a paleontologist at Carthage College in Wisconsin and co-author of the new study.
It appears to be outdated propaganda in defense of Tyrannosaurus rex, rather than a serious exploration of the possibility that fossil specimens contained more than one species”
They have already responded. Paleontologist and independent paleontologist Gregory Ball, who wrote the Mars study with two other colleagues, said, Reuters That team achieve American Museum of Natural History she has It sounded hasty and “not a proper scientific study.”
“It is presented as old propaganda that seems organized to defend R rexAnd the Instead of seriously exploring the possibilities that the fossil specimens of the genus Tyrannosaurus contain more than one species than the genus certainly did,” Paul asserts.
Jurassic Park? No, I couldn’t run that far
In the same July, another study revealed a scene Jurassic Park Where a raging Tyrannosaurus Rex is chasing his character Jeff Goldblum The wounded and the fleeing in a four-wheel drive vehicle. Scientists at the University of Manchester found it The size and weight of a T. rex means that it cannot move at high speedbecause the leg bones would have collapsed under its own weight.
According to William Sellers of the School of Earth and Environmental Sciences, their results show that any type of T. rex race is likely to result in “unacceptably high skeletal loads.” Which means, in simple terms, that Any run would break a dinosaur’s legs. This contrasts with running speeds predicted by previous biomechanical models which may suggest up to 70 kilometers per hour.
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