Albertosaurus Cretaceous Dinosaur

Albertosaurus Dinosaur

Phylum Chordata, Class Sauropsida, Superorder Dinosauria, Order Saurischia, Suborder Theropoda, Infraorder Carnosauria, Family Tyrannosauridae

Geological Time: Late Cretaceous

Size: up to about 30 feet long and 1 1/2 tons

Stratigraphy: Alberta, Canada

Albertosaurus, meaning "Alberta lizard" is a genus of tyrannosaurid, theropod dinosaur that lived in the western part of North America in the Late Cretaceous Period, some 70 million years ago. The type species, A. sarcophagus, was discovered in Alberta, Canada in 1905 (Osborn, 1905).

Like other tyrannosaurids, Albertosaurus was a bipedal predator with small, two-fingered hands, ans huge head many large, sharp teeth that were frequently shed. While massive, Albertosaurus was still smaller than its famous relative Tyrannosaurus. Fossils suggest it occupied the top of the food chain in its habitat and was a pach hunter. Some 30 specimens have been found.

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