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dinosaurbero

Arctic Hadrosaur

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dinosaurbero
I would speculate that this hadrosaur had some kind of insulation ( dino fuzz?)as protection from cold weather. A new paper:Matthew J Vavrek, Len V. Hills & Philip J. Currie (2014)A Hadrosaurid (Dinosauria: Ornithischia) from the Late Cretaceous(Campanian) Kanguk Formation of Axel Heiberg Island, Nunavut, Canada,and Its Ecological and Geographical Implications.http://arctic.journalhosting.ucalgary.ca/arctic/index.php/arctic/article/view/4362Abstract:A hadrosaurid vertebra was recovered during a palynological survey ofthe Upper Cretaceous Kanguk Formation in the eastern Canadian Arctic.This vertebra represents the farthest north record of any non-aviandinosaur to date. Although highly abraded, the fossil nonethelessrepresents an interesting biogeographic data point. During theCampanian, when this vertebra was deposited, the eastern CanadianArctic was likely isolated both from western North America by theWestern Interior Seaway and from more southern regions of easternNorth America by the Hudson Seaway. This fossil suggests thatlarge-bodied hadrosaurid dinosaurs may have inhabited a large polarinsular landmass during the Late Cretaceous, where they would havelived year-round, unable to migrate to more southern regions duringwinters. It is possible that the resident herbivorous dinosaurs couldhave fed on non-deciduous conifers, as well as other woody twigs andstems, during the long, dark winter months when most deciduous plantspecies had lost their leaves.

News release.

http://www.alaskadispatch.com/article/20140330/worlds-farthest-north-dinosaur-bone-find-sheds-light-cretaceous-world

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