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Austroraptor

Austroraptor, meaning “southern Thief”, is a genus of dinosaur that lived during the Cretaceous Period about 70 million years ago. It was found in what is now Argentina. The type species, A. cabazai, was described in 2008 by Fernando Novas of the Argentina Museum of Natural Sciences. It was discovered in the Late Cretaceous deposits near Rio Negro Province of Argentina. The specific name honors Alberto Cabaza, who founded the museum where the specimen was studied.

Austroraptor was considered a large dinosaur within its dromaeosaur family. It measured 16 feet in length from head to tail. It is the largest dromaeosaur yet to be discovered in the southern hemisphere. This dinosaur had relatively short forearms, which were much shorter in proportion compared to other members of its family. It is also commonly compared to another short-arm dinosaur, Tyrannosaurus.

Remains discovered includes only parts of the skull, a few neck and torso vertebrae, ribs, humerus, and assorted leg bones. The remains were discovered in the Allen Formation of Argentina. Although only partial skeleton was recovered, some distinct characteristics show how it was much different from other dromaeosaurs. It had long skull that saw lower on the neck than in other dromaeosaurs. The front limbs were short for a dromaeosaur and the humerus was less than half the length of its femur. The teeth were conical and non-serrated. Some of the anatomical features of the Austroraptor have led scientists to place it in the subfamily Unenlagiinae.

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Austroraptor


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