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Tarbosaurus bite marks have also been identified on hadrosaur and sauropod fossils, but theropod bite marks on bones of other theropods are very rare in the fossil record. [65] A 2020 study involving stable isotopes found that Tarbosaurus primarily hunted large dinosaurs in its environment, most notably titanosaurs and hadrosaurs. [66]
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Fossils have been found in different formations in what is now east Asia and western North America. While the Asian alioramins are the basal most group of the tyrannosaurines, the geographic placement of albertosaurines and other eutyrannosaurian tyrannosauroids found in North America suggests greatly the tyrannosaurines are North American in ...
Nomingia gobiensis: Notable as one of the first non-avian dinosaurs found with a pygostyle. It may, however, be a synonym of Elmisaurus. "Nurosaurus qaganensis": Noteworthy for preserving the first stress fracture found on a sauropod foot.
Estimated size compared to a human. Zhuchengtyrannus was a large carnivorous theropod, and the holotype has been estimated to have been "similar in size and gross morphology to Tarbosaurus", [1] which is about 10 metres (33 ft) in body length and 5 metric tons (5.5 short tons) in body mass.
In 2007, it was found that the group also contained Maleevosaurus, often synonymized with Tarbosaurus. [15] However, this classification has not been accepted and Maleevosaurus is still considered a juvenile Tarbosaurus or Tyrannosaurus. [16] This classification has not been accepted. [2] [3]
Restoration of two Tarascosaurus chasing an iguanodont. After having in 1988 identified an upper jaw bone found near Pourcieux as belonging to a member of the Abelisauridae, [1] French paleontologist Éric Buffetaut reviewed the known remains of larger theropods found in the Late Cretaceous of Europe concluding they all were of abelisaurid affinity.
Skeleton cast of Tarbosaurus bataar, a tyrannosaurid from Asia. Of the two subfamilies, tyrannosaurines appear to have been more widespread. Albertosaurines are unknown in Asia, which was home to the tyrannosaurines, such as Tarbosaurus and Zhuchengtyrannus, and Qianzhousaurus and Alioramus of the Alioramini.