Joe asked: > Who was the discoverer? Scott D. Sampson1*, Mark A. Loewen1, Andrew A. Farke2, Eric M. Roberts3, Catherine A. Forster4, Joshua A. Smith1, Alan L. Titus5 1 Utah Museum of Natural History and Department of Geology and Geophysics, University of Utah, Salt Lake City, Utah, United States of America, 2 Raymond M. Alf Museum of Paleontology, Claremont, California, United States of America, 3 School of Earth and Environmental Science, James Cook University, Townsville, Queensland, Australia, 4 Department of Biological Sciences, George Washington University, Washington, D. C. United States of America, 5 Grand Staircase-Escalante National Monument, Bureau of Land Management, Kanab, Utah, United States of America http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0012292 P.S. - Sampson is also the Dinosaur Guy slash paleontologist who does the spots on the kids show ``Dinosaur Train.'' http://www.scottsampson.net/index.php?page=bio See also the UMNH Press Release on the EPOD page.