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It contains the single type species: Tarbosaurus bataar, which is known from the Nemegt Formation of Mongolia, with more fragmentary remains found further afield in the Subashi Formation of China. Tarbosaurus is represented by dozens of fossil specimens, including several complete skulls and skeletons.
English: Size comparison between a juvenile Tarbosaurus at age of about 3 years. [1] (based on a specimen found in Mongolia, the summer of 2006), and the fossil of the Tyrannosaurid specimen IVPP V4878, described as Shanshanosaurus huoyansaniensis (Dong, 1977).
Tarbosaurus (meaning 'terrifying lizard') is a genus of tyrannosaurid theropod dinosaur that flourished in Asia between 70 and 65 million years ago, near the end of the Late Cretaceous Period. Fossils have been recovered in Mongolia with more fragmentary remains found further afield in parts of China .
Reason: They have discovered that the juvenile specimen is not 5 years old, but rather 2-3. You may ask further questions about the accuracy of this image at the image review page of WikiProject Dinosaurs on the English Wikipedia. Note that this image may be appropriate to illustrate obsolete paleontological views.
These genera, however are controversial as the remains of these animals are immature or juvenile individuals. With the possible exception of Raptorex, [17] it is widely assumed that the Asian specimens are early growth stages of Tarbosaurus, [18] [19] [20] whereas the North American specimens are those of Tyrannosaurus. [21] [22]
Its taxonomy is also controversial, as some scientists consider Tarbosaurus bataar from Asia to be a third Tyrannosaurus species, while others maintain Tarbosaurus is a separate genus. Several other genera of North American tyrannosaurids have also been synonymized with Tyrannosaurus.
Only a Google Books search shows a preference for "Tarbosaurus bataar", and even this is small (339 for "Tarbosaurus bataar" versus 325 for "Tyrannosaurus bataar"). I have also seen 1 newer study and 1 newer book that say Tyrannosaurus bataar, and 1 older study and 1 older book that say Tarbosaurus bataar.
An additional tyrannosaurid, Raptorex, was initially described as a more primitive tyrannosauroid, but likely represents a juvenile tyrannosaurine similar to Tarbosaurus. However, as it is known only from a juvenile specimen, it is also currently considered a nomen dubium . [ 37 ]