It has therefore been suggested that Tyrannosaurus had lips covering it's teeth.
Although this may indicate a significant lack of feathers, the study doesn't take in consideration that feathers can grow alongside scales in some dinosaurs, like in Juravenator.Ī study in 2016 suggests that large theropods, like Tyrannosaurus, had enamel on it's teeth, which would mean they had their teeth covered in saliva, and therefore they would have to be protected from the exterior.
#SAURIAN DAKOTARAPTOR ANIMATION SKIN#
The studies that propose a significant lack of feathers on Tyrannosaurus are based on the discovery of small skin impressions found in many members of the Tyrannosauridae that show scales on many parts of the body. Dense feather coatings would most likely have been found on the torso, if they existed. However, recent analysis on tyrannosaurid skin impressions, show that probably Tyrannosaurus lacked a dense coating of feathers and, if it had feathers, it will be in a similar way to how an elephant's fur is spread across its body. To most paleontologists, it seems very likely that Tyrannosaurus had at least some feathers. Its cousins Dilong and Yutyrannus had been discovered with feathers, and may have been present in other Tyrannosauroids as well. There is debate on whether Tyrannosaurus had plumage or not. A study from Currie, Horner, Erickson and Longrich in 2010 has been put forward as evidence of cannibalism in the genus Tyrannosaurus. They studied some Tyrannosaurus specimens with tooth marks in the bones, attributable to the same genus. Currie of the University of Alberta has suggested that Tyrannosaurus may have been a pack animal. Scientists presume that the bite force of Tyrannosaurus was 12,000 to 12,800 pounds (53,378 to 56,937 newtons) per square inch. Tyrannosaurus had one of the most powerful bite forces of any terrestrial animal ever to live, with a bite force surpassing many modern animals. Tyrannosaurus were both hunters and scavengers like many modern predators, hunting hadrosaurs (such as Anatosaurus), ceratopsians (such as Triceratops) and even the occasional ankylosaur (such as Denversaurus and Ankylosaurus). It was the largest terrestrial carnivore ever discovered in North America. Tyrannosaurus rex measures around 12 meters (40 feet) long, with particularly large specimens approaching 13 meters (43 feet), stands approximately 3.7 meters (13 feet) tall at the hips, and weighed at least 7-9 tons.
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