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The article currently used for its speed: https://www.cbsnews.com/news/t-rex-couldnt-run-research-tyrannosaurus-rex-university-of-manchester/
The study's simulation has some issues. For example, they limit the stride greatly by making it graviportal. The Tyrannosaurus, like all other theropods, had long metatarsals and tibiotarsus, all articulating in a way that absorbs stresses in the joints. In the simulation, they restricted this, effectively making it a bipedal elephant. Imagine an ostrich, but it can't move it's legs properly, thus resulting in a slow, non-running ostrich, due to its loss of proper function. As well as Tyrannosaurus rex having pneumatic bones, a 4-chambered heart, superb eyesight, an extended tibia, enlarged rib cage, some of the strongest legs of any of the large theropods, and a fused metatarsal. These are the traits of a creature designed to run. For example, the Giganotosaurus has all of these traits and could run 48―56 km (about 31 mph), whose largest discovered specimen is larger than Sue, the current largest model for a T. Rex ever found. So if a creature with the same body structure that is the same to larger in size can run why couldn't a T. Rex?
I believe the study isn't executed properly and we shouldn't base the T. Rexes' speed on it.
The study's simulation has some issues. For example, they limit the stride greatly by making it graviportal. The Tyrannosaurus, like all other theropods, had long metatarsals and tibiotarsus, all articulating in a way that absorbs stresses in the joints. In the simulation, they restricted this, effectively making it a bipedal elephant. Imagine an ostrich, but it can't move it's legs properly, thus resulting in a slow, non-running ostrich, due to its loss of proper function. As well as Tyrannosaurus rex having pneumatic bones, a 4-chambered heart, superb eyesight, an extended tibia, enlarged rib cage, some of the strongest legs of any of the large theropods, and a fused metatarsal. These are the traits of a creature designed to run. For example, the Giganotosaurus has all of these traits and could run 48―56 km (about 31 mph), whose largest discovered specimen is larger than Sue, the current largest model for a T. Rex ever found. So if a creature with the same body structure that is the same to larger in size can run why couldn't a T. Rex?
I believe the study isn't executed properly and we shouldn't base the T. Rexes' speed on it.
