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Lambeosaurine Dinosaur

First-confirmed occurrence of a lambeosaurine dinosaur found on Alaska's North Slope. Paleontologists have discovered the first-confirmed occurrence of a lambeosaurine (Crested 'duck-billed' dinosaur) from the Arctic -- part of the skull of a lambeosaurine dinosaur from the Liscomb Bonebed (71-68 Ma) found on Alaska's North Slope. The discovery proves for the first time that lambeosaurines inhabited the Arctic during the Late Cretaceous. Source 5w.

Dinosaur Lambeosaurine

If Alaska remained the same as millions of years ago in terms of climate and arctics; how can the lambeosaurine - a herbivore can survive with the absence or rarity of vegetation?