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Gorgosaurus

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Gorgosaurus
Gorgosaurus BW
Name Gorgosaurus
Order Saurischia
Suborder Theropoda
Class Tyrannosauridae
Name Translation Fierce Lizard
Period Late Cretaceous
Location North America
Diet Meat
Length 26 to 30 ft (8 to 9 m) and up to 2.4-3 tonnes


Gorgosaurus (Latin for "fierce lizard") is a genus of carnivorous dinosaur that reached 8 to 9 meters (27 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 70 million years ago in the late Cretaceous period.

800px-Gorgosaurusscale.svg
Over 20 Gorgosaurus skeletons have been recovered, making it the most well-represented tyrannosaurid in the fossil record. Generally
250px-IndyGorgorsaurus

Gorgosaurus Skeleton

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 

March of the Dinosaurs Gorgosaurus

March of the Dinosaurs Gorgosaurus

ankylosaurians (horned and heavily armoured dinosaurs) would have been left to Daspletosaurus. 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

Scary

Gorgosaurus as it appears in Walking with Dinosaurs 3D.

Gorgosaurus had a large role in the movie March of the Dinosaurs, where it was show to be "king of the North". It stalked a herd of Edmontosaurus and Pachyrhinosaurus and an Edmontonia and bullied around a Troodon pack. It was finally killed when the Edmontonia hit it in the leg with its tail and crippling it, causing it to starve to death.

March-of-the-dinosaurs-poster

Two Troodons fighting with a Gorgosaurus over an Edmontonia

Walking With Dinosaurs - Dino Files Gorgosaurus00:27

Walking With Dinosaurs - Dino Files Gorgosaurus

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