During the days of Pangea, it appears that Utah would have been considered "highlands" at 200 to 1,000 meters above sea level. Generally, lowland fossils are well-preserved due to the concept of the great flood, while highland fossils, being exposed to the elements are not. In the case of Utah, the desert sands may have been instrumental in preserving fossils. (see http://www.dinosauria.com/jdp/buckna/seven.htm)From redorbit.com: "A collection of 60 to 70 new bones, one of which resembles a 20-foot-long neck bone, have been discovered this week at one of Utah's most prominent dinosaur quarries, the Associated Press reported."
Scientists believe ancient streams carried and deposited the bones collectively at the site. Jim Kirkland, Utah's state paleontologist, said that the bones were "stacked up like cordwood," in some spots.
CBS affiliate in Salt Lake City, KUTV Channel 2 reports that "The Bureau of Land Management says officials with the Burpee Museum of Natural History in Rockford, Ill., will conduct guided tours at the site near Hanksville in Wayne County starting Sunday. "
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