Utahraptor had many features typical of dromaeosaurs, including a mouth full of sharp teeth, a large sickle-shaped claw on each foot, a long stiff tail, and very likely a body covered in feathers.
However, it was much larger and heavier than most other dromaeosaurs. Utahraptor was originally thought to be able to reach sizes of over 20 feet, though recent estimates put it closer to 16 or 18 feet at the longest. Still, this is far bigger than relatives like Microraptor (which was only about two and a half feet long), Velociraptor (which grew to around six feet long) and Deinonychus (which could reach up to 11 feet in length).
Utahraptor was also thicker and stockier than most dromaeosaurs, which tended to be agile and slender. The claws on its hands were also more suited to cutting than those of its relatives. Rather than a thin, narrow head like that of Velociraptor, Utahraptor’s head was deep and almost square-shaped with a blunt snout.
Dromaeosaurs are known for the oversized claws present on the second toe of each foot. In the case of Utahraptor, these claws could be over nine inches long!
LENGTH: Up to 5.5 meters (18 feet)
WEIGHT: 300 kg (660 pounds)