| Diet | Carnivore |
| Height | 1m |
| Length | 3m |
| Weight | 65 kg |
| Environment | Land |
| Era | Cretaceous |
| Period | Early Cretaceous |
| Type | Theropod |
| Location | Mongolia Or Northeastern China |
Raptorex is one of the most controversial theropod dinosaurs ever described. Known from a single juvenile specimen that probably came from Mongolia or northeastern China, this small predator lived during the Early Cretaceous period, approximately 126 million years ago. However, many palaeontologists question whether Raptorex is actually a valid genus at all.
The only known specimen was about 3 metres long and stood roughly 1 metre tall at the hip, weighing around 65 kilograms. Despite its relatively small size, Raptorex displayed many features typical of larger tyrannosaurs, including powerful hind legs, small arms with two-fingered hands, and a large head filled with sharp teeth. This combination led some scientists to suggest it represented an early stage in tyrannosaur evolution.
As a theropod, Raptorex was built for hunting. Its long, muscular legs would have made it a swift predator, capable of chasing down smaller dinosaurs and other prey across the ancient landscapes of Asia. Its sharp, serrated teeth were perfect for slicing through flesh, whilst its powerful jaw muscles could deliver devastating bites.
The controversy surrounding Raptorex stems from the fact that many experts believe the specimen is simply a juvenile Tarbosaurus, a well-known Asian tyrannosaur, rather than a separate species. The debate continues, making Raptorex one of palaeontology's most disputed discoveries.
Raptorex displayed classic tyrannosaur proportions despite its small size, with disproportionately large head, powerful hind legs, and tiny two-fingered arms. The specimen shows a blend of primitive and advanced tyrannosaur features that made it initially appear to be a distinct species.
Raptorex would have been an active predator, using its speed and agility to hunt smaller dinosaurs and other animals. Its large eyes suggest it had good vision for spotting prey, whilst its powerful legs indicate it was built for pursuit hunting across open terrain.
Raptorex was first described by Paul Sereno and colleagues in 2009. The original fossils were discovered at Mongolia or northeastern China (exact location uncertain).
