Keywords: Edmontosaurus regalis skull and jaws, Near Drumheller, Alberta, Canada, Late Cretaceous - Royal Ontario Museum - DSC00020.JPG Photograph of ROM 801 a skull of the hadrosaurine hadrosaur Edmontosaurus regalis L<small>AMBE</small> 1917 from the Late Cretaceous latest Campanian or early Maastrichtian Horseshoe Canyon Formation of Alberta Canada <ref>Cf fig 2 in Nicolás E Campione David C Evans 2011 Cranial Growth and Variation in Edmontosaurs Dinosauria Hadrosauridae Implications for Latest Cretaceous Megaherbivore Diversity in North America PLoS ONE 6 9 e25186 10 1371/journal pone 0025186 </ref> on display in the Royal Ontario Museum Toronto Ontario Canada <references /> own 2011-11-21 11 42 03 Daderot This exhibit is old enough so that it is in the public domain and photography was permitted in the museum I took this photograph and release it into the public domain cc0 Fossils in the Royal Ontario Museum Edmontosaurus skulls |