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ഫലകം:Automatic taxobox/testcases

വിക്കിപീഡിയ, ഒരു സ്വതന്ത്ര വിജ്ഞാനകോശം.


Junkia
ശാസ്ത്രീയ വർഗ്ഗീകരണം e
കിങ്ഡം: സസ്യലോകം
ക്ലാഡ്: ട്രക്കിയോഫൈറ്റ്
ക്ലാഡ്: സപുഷ്പി
ക്ലാഡ്: ഏകബീജപത്രസസ്യങ്ങൾ
Order: Asparagales
Family: Junkiaceae
Subfamily: Junkioideae
A.Junk
Genus: Junkia

Albertosaurus (/[invalid input: 'icon']ælˌbɜːrt[invalid input: 'ɵ']ˈsɔːrəs/; meaning "Alberta lizard") is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period, more than 70 million years ago. The type species, A. sarcophagus, was apparently restricted in range to the modern-day Canadian province of Alberta, after which the genus is named. Scientists disagree on the content of the genus, with some recognizing Gorgosaurus libratus as a second species.

As a tyrannosaurid, Albertosaurus was a bipedal predator with tiny, two-fingered hands and a massive head with dozens of large, sharp teeth. It may have been at the top of the food chain in its local ecosystem. Although relatively large for a theropod, Albertosaurus was much smaller than its more famous relative Tyrannosaurus, probably weighing less than 2 metric tons.

Since the first discovery in 1884, fossils of more than thirty individuals have been recovered, providing scientists with a more detailed knowledge of Albertosaurus anatomy than is available for most other tyrannosaurids. The discovery of 22 individuals at one site provides evidence of pack behaviour and allows studies of ontogeny and population biology which are impossible with lesser-known dinosaurs.

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