New Giant Raptor similar to Mini T.rex is uncovered in Argentina

December 17, 2008

The Buitreraptor-Deinonychus is the closest descendant to the new species(ChattahBox) — An unusual raptor dinosaur found in Argentina is the largest of its kind found so far in the Southern Hemisphere. Researchers said the creature would have weighed 368 kg (800 pounds) and been nearly 5 meters (15 feet) long when it hunted in what is now Patagonia 100 million to 65 million years ago.

Raptors or dromaeosaurids were slender two-legged hunters popularized in fictional books and films such as Jurassic Park in part because of their sharp claws. With awkwardly short arms that made it resemble a Tyrannosaurus this new discovery sheds light on the evolution of dromaeosaurids, birdlike dinosaurs that ran on two legs and are considered by many to have been the most intelligent of the dinosaurs.

Fernando Novas of the Museo Argentino des Ciencias Naturales and colleagues named the newly discovered species Austroraptor cabazai, from austral in reference to southern South America, and raptor meaning thief. The cabazai honors the late Alberto Cabaza, founder of the Museo Municipal de Lamarque, whose researchers also helped in the work.

Novas’ team called theirs a “a startling new example” of the species because of its size, long snout and short arms. The animals usually had long forearms, they said.


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