1. University of Colorado Boulder, Museum of Natural History, Boulder, Colorado, 80309, USA
2. University of Colorado Boulder, Museum of Natural History, Department of Geological Sciences, Boulder, Colorado, 80309, USA
3. Utah Geological Survey, Salt Lake City, Utah, 84116, USA
4. St. George Dinosaur Discovery Site at Johnson Farm, St. George, Utah, 84790, USA
5. Kutztown University, Department of Physical Sciences, Kutztown, Pennsylvania, 19530, USA
6. University of Colorado Boulder, Department of Geological Sciences, Boulder, Colorado, 80309, USA