"An overwhelming majority of all dinosaurs — between 80 to 90 percent — are known by researchers on the basis of just one partial skeleton; sometimes just a few mere bones that have been flattened, over the ages, like pancakes."
This was in an article about the same find - amazing to find out so much from so little, don't you think?
From the article: The scientists dubbed it Falcarius utahensis. Bones from hundreds or maybe thousands of these dinosaurs were discovered at a two-acre dig site south of the town of Green River. Nobody knows why they gathered there or what killed them, Kirkland said.
Now, did you just not read it? Or what?