Tarbosaurus facts for kids
Quick facts for kidsTarbosaurus
Temporal range: Late Cretaceous, 70Ma Possible Campanian record
|Skeleton on exhibit in Dinosaurium, Prague|
Tarbosaurus was a large carnivorous theropod dinosaur from Asia, especially Mongolia and China. It was a tyrannosaurid dinosaur which flourished between 70 and 65 million years ago, at the end of the Cretaceous period.
Tarbosaurus lived in a humid floodplain criss-crossed by river channels. In this environment, it was a predator at the top of the food chain, probably preying on other large dinosaurs like the hadrosaur Saurolophus or the sauropod Nemegtosaurus.
Comparison with T. rex
Like its close North American relative Tyrannosaurus rex, it had a large head and powerful jaws, but was not top heavy. Its huge skull was comparatively light, with large air pockets. Many of its bones were hollow, making them strong but light, so they did not add excessive weight to this large predator.
Its skull was similar to that of Tyrannosaurus, but more rigid. Also, because its skull was not so broad at the back, it did not have binocular vision like Tyrannosaurus.
In the lower jaw, a ridge on the outer surface of the angular bone articulated with the rear of the dentary bone, creating a locking mechanism unique to Tarbosaurus and Alioramus. Other tyrannosaurids lacked this ridge and had more flexibility in the lower jaw.
Its forlimbs were small with two fingers, as with its larger relative. The small, two-fingered, front limb is absolutely distinctive of tyrannosaurids.
The three-toed hind limbs were long and thick, supporting the body in a bipedal posture. The long, heavy tail served as a counterweight to the head and torso and put the center of gravity over the hips.
- "Both Asiatic and North American... tyrannosaurines [NAT] hunted large prey, whilst also being opportunistic scavengers. However, the prey available to them were obviously different... the adult T. rex... probably specialized in bringing down large horned dinosaurs, like Triceratops... but this group was absent outside North America. Thus, the Mongolian tyrannosaurines were forced to feed on sauropods... These differences in typical prey items might have exerted different selective pressures, concerning hunting strategy and mechanical requirements maximizing their success rate as predators".
- "The new material studied in this paper allows us to speculate if the tyrannosaurines can be divided into NATs and an Asiatic group".
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Tarbosaurus Facts for Kids. Kiddle Encyclopedia.