Temporal range: Late Cretaceous
059 gorgosaurus libratus by green mamba-d590yub.png
An artist's illustration of Gorgosaurus libratus
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Superorder: Theropoda
Genus: Gorgosaurus
Lambe, 1914
Species: G. libratus
Binomial name
Gorgosaurus libratus
Lambe, 1914
Gorgosaurus (gor·go·saur·us/pronounced GOR-go-SAWR-us) (Greek for "fierce lizard" from the Greek words ) is a genus of theropod and carnivorous dinosaur that reached 8 to 9 meters (26 to 30 feet) in length, and weighed 2.5-3 tonnes. It was first described by paleontologist Lawrence Morris Lambe in 1914, and has been found in western Canada and the United States. It lived about 76-75 million years ago in the late Cretaceous period.

Gorgosaurus Skeleton


Gorgosaurus Size

Over 20 Gorgosaurus skeletons have been recovered, making it the most well-represented tyrannosaurid in the fossil record. Generally similar to Tyrannosaurus and most other large tyrannosaurids (such as Daspletosaurus, and Albertosaurus), Gorgosaurus can be described as having a massive head, large, curved teeth, tiny two-fingered front limbs, and powerful legs. Compared to the other tyrannosaurids, Gorgosaurus is most similar to its very close relative Albertosaurus.

Although it has been suggested that Gorgosaurus was a scavenger, its co-existence with the similarly sized, but more robust tyrannosaurid Daspletosaurus casts doubt on this theory. Another hypothesis proposes that Gorgosaurus, which was rather lean for a tyrannosaurid, actively hunted fleet-footed animals such as duckbills and ornithomimids ("ostrich-mimic" dinosaurs). According to this proposition, the more troublesome ceratopsians and ankylosaurians (horned and heavily armoured dinosaurs) would have been left to Daspletosaurus and Gorgosaurus would have hunted on less armored hadrosaurs. An apex predator, it was at the top of the food chain.

For years, the species Gorgosaurus libratus (the only species of Gorgosaurus currently recognized) was assigned to the Albertosaurus genus. However, recent work done by paleontologists suggest that enough differences exist between G. libratus and the other Albertosaurus species, to justify the original genus name of Gorgosaurus.

In Popular Culture

Gorgosaurus had a large role in the movie March of the Dinosaurs, where it was show to be "king of the dinosaurs", and it has feathers like in reality. It also had a large role in Walking With Dinosaurs: The 3D Movie, where it is seen as the main antagonist but it lacks feathers.

Gorgosaurus appeared in Fossil Fighters, Fossil Fighter Champions, and Fossil Fighters Frontier, as a Fire element revivable dinosaur.

It also appears in Jurassic World: The Game as a tournament dinosaur. It sports a prominent crest on its snout, and seems to be covered in crocodilian armor on its back when it likely had some feathers on bare skin and avain scales on legs and no crest in life.

Gorgosaurus will be in Jurassic World: Alive, being fairly similar to the Walking With Dinosaurs version.

In Planet Dinosaur, it appears in the database in last killer.

  • Walking with Dinosaurs: The 3D Movie
  • March of The Dinosaurs Gorgosaurus
  • Jurassic World: The Game Gorgosaurus card
  • Fossil Fighter Gorgosaurus
  • Dinosaur King Gorgosaurus
  • Jurassic World: Alive Gorgosaurus



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