By examining the shape of the wrist and hip bones scientists have worked out that therizinosaurs are closely related to Velociraptor. This bone would have been covered by a sheath of keratin making the claw even longer. A frontal attack on an adult Therizinosaurus may not have ended well for this tyrannosaur as it did not have the type of vision for judging distance very precisely that was necessary to avoid being stabbed.Ĭast from a real specimen from Mongolia that is around 70 million years old. Unable to outrun such a predator, Therizinosaurus would have stood its ground, towering over the tyrannosaur with metre-long claws ready to strike. The main threat to Therizinosaurus was a huge tyrannosaur called Tarbosaurus bataar. Their small heads and the shape of their teeth show that therizinosaurs abandoned the meat-eating habits of their theropod ancestors and ate plants. Handy in a fight All members of this group have long arms and therizinosaurs had hands equipped with the largest claws in the animal kingdom. They belong to the theropod dinosaur group called maniraptors which also includes birds. Therizinosaurus was one of the last and largest representatives of its unique group, the Therizinosauria.
Because these dinosaurs had strange features it took scientists a long time to realise where they belonged in the dinosaur family. Therizinosaurus, also commonly dubbed The Giant Claw due to its scythe-like claws, was a species of herbivorous theropod dinosaur. Therizinosaurs appeared 120 million years ago and their remains have been found in Asia and North America.
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