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New duck-billed dinosaur gives scientists clues to evolution of head ornamentation and provinciality
Date:7/20/2011

rsity of Chicago and was excavated in 2001 and 2002 by study coauthor Rebecca Hanna for the Museum of the Rockies in Bozeman, Montana, where it now resides.

The Utah specimen was found in the year 2000 in Grand Staircase Escalante National Monument by study coauthor C. Riley Nelson, an entomologist from Brigham Young University, who reported his finding to a local paleontologist. The Utah Museum of Natural History in Salt Lake City excavated the specimen in 2003.

The researchers who described the new dinosaur are grateful to the family owning the Montana land where the first of the two fossils of Acristavus was found. "These private land owners are to be commended for their generosity because the dinosaur found on their property is an exceptionally important piece of the paleontological puzzle," says Hanna.

The Montana specimen was found on land originally owned by Cowboy Hall of Fame Member Russell Ellsworth "Gags" Larson (deceased) and his wife Nora Bush Larson of Choteau, Montana. It was donated to the Museum of the Rockies by their children. To honor the family patriarch, the scientists gave the species the scientific name gagslarsoni.


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Contact: Nancy O'Shea
noshea@fieldmuseum.org
312-665-7103
Field Museum
Source:Eurekalert

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