( e Ciencias Naturales in Buenos Aires an...)Newly discovered birdlike dinosaur is oldest raptor ever found in South America

e Ciencias Naturales in Buenos Aires and The Field Museum. The fieldwork, in rugged terrain, was supported by funding from NASA, the Jurassic Foundation, and Michael and Jacqueline Ferro of Chicago. The Agencia Cultura of Ro Negro Province loaned the fossil to The Field Museum.

The holotype, or definitive, fossil of this adult dinosaur is in excellent condition: articulated and nearly complete. An additional partial skeleton discovered on an earlier expedition led by Apestegua helped fill in missing bones. Since discovering the first two Buitreraptor fossils, the scientists have discovered at least two more in the same area during fieldwork conducted in January 2005.

"Although Buitreraptor is a recent discovery, we already have a very good sample of this remarkable dinosaur," Makovicky says. "A growth series of Buitreraptor individuals would allow us to study how the animal grew and how its proportions may have changed with growth ?information that may be useful to understanding the changes in body proportions that led to the origin of birds and flight."

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Source:Field Museum


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