Preserved tracks in Alaska park suggest duck-billed dinosaurs lived in Arctic year-round

(Phys.org) —A trio of researchers has published the results of a study of dinosaur tracks found in Alaska's Denali National Park in 2007. Anthony Fiorillo, Stephen Hasiotis and Yoshitsugu Kobayashi, of the Perot Museum, the University of Kansas and Hokkaido Museum respectively, report, in an article published in the journal Geology, on their analysis of 70 million year old hadrosaur footprints and what they revealed about the lifestyle of the dinosaurs.

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