The number of fossils in their dataset is so small that it's hard to find any consistent way to divide Tyrannosaurus into multiple species based on clear, easy-to-define, consistent differences." "We are open-minded that there may be multiple species of Tyrannosaurus," Brusatte noted. "Had our paper been about the species of, say, the also gigantic Argentinian theropod Giganotosaurus there very likely would not have been so much fuss and bother," Paul added. rex that causes people to become concerned or worried to a degree not seen with other ancient organisms.
He added that there is something about T. Gregory Paul, however, criticized the new study as "not a proper scientific study." Proper is a term that means correct. Just look at the range of height and waistlines and toothy grins in people today, all of whom are members of a single species…," Brusatte said. "It is normal for any species to be variable in size and shape. They found that the Tyrannosaurus differences were normal or usual. The new study looked at differences in thighbone thickness in four other meat-eating dinosaurs and 112 species of living birds. It walked on two strong legs and had small arms with just two fingers. It had a large head and powerful bite strength. Tyrannosaurus was part of a group called theropods that included all the meat-eating dinosaurs. rex bones, but in our new study we show that this variation is minimal," Brusatte said. It is true that there is variation in the size and shape of T. rex, which has been known for over a hundred years, into different species requires a high burden of proof. "The evidence needs to be convincing, and to suddenly divide such an. University of Edinburgh paleontologist Steve Brusatte was a co-leader of the new study published in Evolutionary Biology in July. They suggested the previous study did not use correct mathematical methods or measurements. In July, another group of paleontologists argued that the March study did not offer enough evidence to show that there were three Tyrannosaurus species. They based their claims on over thirty Tyrannosaurus specimens. The researchers said their study was based on differences in the thickness of the thighbones and the shape of the lower front teeth. imperator, meaning "tyrant lizard emperor," and T. rex, meaning "tyrant lizard king," they proposed two additional species: T. A genus is a larger grouping of related organisms than a species.īut three researchers, led by independent paleontologist Gregory Paul of Baltimore, Maryland, argued in March 2022 that three T. rex has been recognized as the single species of the genus Tyrannosaurus. Now, researchers are debating whether the giant meat-eating tyrannosaurus should be considered as one species or three different species. rex, has long been one of the most famous dinosaurs.
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