First North American co-occurrence of hadrosaur and therizinosaur tracks discovered

An international team of paleontologists and other geoscientists has discovered the first North American co-occurrence of hadrosaur and therizinosaur tracks in the lower Cantwell Formation within Denali National Park, suggesting that an aspect of the continental ecosystem of central Asia was also present in this part of Alaska during the Late Cretaceous. This comprehensive cross-disciplinary effort has resulted in a paper – entitled “An unusual association of hadrosaur and therizinosaur tracks within Late Cretaceous rocks of Denali National Park, Alaska” – published in Scientific Reports, an online open access scientific mega journal published by the Nature Publishing Group, covering all areas of the natural sciences. Anthony R. Fiorillo, Ph.D., chief curator and vice president of research and collections at the